BRITISH SUBSCRIBER TRUNK DIALLING CODES
The Original Alphanumeric Codes in all their Glory!
NB: This article was written before the 'Phoneday' code reorganisation.
A number of 'experts' have hitherto tried to determine the hierarchy of telephone exchanges in the UK by analysing the STD codes used for long distance dialling. Most have been disappointed, claiming that there is no logic in the British system. After all, how can Brighton possibly follow Bristol? There is patently no significance in the choice of numerals, neither geographical nor numerical.
Almost right. In fact the STD codes were originally designed to be as meaningful as possible to users of the telephone system: the only problem is that circumstances have altered. This is because the STD numerals are not all numerals - some are letters! With the exception of 01 for London (a reasonable choice, reflecting London's significance as the hub of the network), all other codes were formulated with letters.
So Bristol (0272) is really 0BR2 and Brighton (0273) is in reality 0BR3. And Birmingham is 0B1 and Manchester is 0M1, though the decision was taken to use all-figure numbers only for the so-called director areas, and 0B1, 0E1, 0G1, 0L1 and 0M1 were always shown as 021, 031, 041, 051 and 061.
The list which follows is the latest revision of the STD code list and may amuse you to find the original derivation of your own STD code. The study is a serious one, though, and has taken a fair amount of research and effort; unfortunately no complete official records have been found and there are a few gaps and suppositions. Any help in eliminating the latter will be most welcome.
The use of letter mnemonics was intended as a help to folk who were not trained telephonists - the trunk dialling codes used by PO assistance operators bore no relationship to these codes and in fact varied across the country. Originally the meaning of the letter combinations was published in the STD code book and in a few cases this was necessary since you would never otherwise have guessed!
Researched by Selwyn Horne and Andy Emmerson
For towns the STD code normally applied to an exchange or group of exchanges based around a Group Switching Centre (GSC), while in rural areas a single code often covered a number of exchanges in a so-called charge group. For the latter the 'named' place could either be a town or village (not necesarily the chief one) in the charge group, or else the name of the district, a river or some other geographical feature. Some of the latter choices were extremely obscure (Gipping and Wicklewood spring to mind) and in a few cases the organisers resorted to virtually meaningless names (North West) or cyphers (0FX3 and 0LTK).
In several cases two adjacent (or near-adjacent) charge groups, and hence STD codes, share the same name (although parented on different GSCs). The named place (e.g. Meriden, Oundle) is in fact served by only one of the codes, which can be confusing. In some cases the name is of a geographical feature (e.g. Wye Valley), which is entirely inappropriate to the "other" charge group. Similar insensitivity in the selection of names for STD codes is shown in some Welsh and Scottish choices, e.g. USK VALLEY and TAY VALLEY, where no self-respecting native would use the term valley but cwm or strath instead. Apparently the allocation of code letters was done by PHQ (postal), not THQ (telecomms) people who were English and either unaware of, or immune to, to Scottish and Welsh sensitivities of naming.
Some of the choices were rather elegant, such as 0AS6, 0BR6 and 0CR6 for the Ascot, Bracknell and Camberley group of communities (the planners may have had Bagshot 0BS6 in mind as well). A single numerical code 0276 thus served all these exchanges, or at least it would have done had the Post Office not taken fright at population trends in this district. They decided that a single code might not be sufficient to cater for future growth and instituted separate codes for Bracknell and Ascot. As these came late in the day, considerable ingenuity had to be used to fit meaningful names to the remaining unused numeric combinations. In the event 0EH4 (Easthampstead) and 0WW0 (Wentworth) were selected. Ironically Ascot was later subsumed in Bracknell and the 0990 code was re-allocated to national-rate numbers (now 0870). A code was reserved for the planned new town of Dawley, but this town was never built (Telford was created instead). Ormskirk acquired the alternative name of Skelmersdale, presumably on account of new town development.
All good things come to an end and it was decided that in the interests of international subscriber dialling that we would change to all-figure numbers (AFNs). There was nothing wrong with letters but some less enlightened countries did not provide these on telephone dials (or else had slightly or completely different selections of letters). All the ingenuity of the alphanumeric system was thus to no further avail.
In general codes were allocated progressively according to the significance of the location served (presumably in terms of telephone traffic). In the case of four-figure codes, the first (and most important location) received the digit xxx2, then 3, 4 and so on, Codes ending in 1 were used last of all, for the least signifcant locations.
Some STD codes have no alphabetic significance, usually because they were created after all-figure numbering (AFN) came in. A large group of codes were changed when those commencing 00 were abolished.
NOTES TO THE LIST
The following is a list of the early STD codes that were based on letter mnemonics. The name which gave the code its letters is shown first. Where necessary, the code is followed by a more precise geographical location shown in square brackets [thus].
For some codes more than one letter combination was devised. We have also shown other plausible letter combinations which may or may not have been envisaged at the time.
In cases where the Group Switching Centre is located elsewhere, it is shown in angle brackets <thus>, together with the routing digit (where known).
Letter portions of STD codes shown in round brackets (thus) are intelligent guesses but have not been verified. It has not been possible to verify every single code, and it is quite possible that the original papers on this subject have not been preserved.
AFN... All Figure Numbering
GSC... Group Switching Centre
The expressions RING and CORE are used as follows: CORE is a town or city with a Group Switching Centre. The RING is the group of dependent exchanges which have their incoming STD calls routed through the CORE. In recent years, particularly with the growth of six-figure numbering, BT policy has been to abolish RING numbers and codes and to incorporate the RING exchanges in a linked numbering system with the CORE exchange. Subsequent growth of the telephone system has nullified this on occasions, as in the case of Bristol, where the RING was abolished, only to be re-introduced some years later due to pressure on numbers in the CORE.
Where an STD codes has since been changed, the new digits are shown in square brackets [thus].
Codes starting 00xx (0Oxx) were withdrawn to avoid the second digit of an STD code starting with 0. It was belived that this might otherwise lead to confusion on incoming direct-dialled calls from overseas. Another benefit, which may not have been the prime cause, was that it would enable the prefix 00 to be reserved for future use as the outgoing international access code. Replacement codes are noted; most commence 08xx since these were least used previously.
The codes for director areas outside London were selected on the basis of 0B1 Birmingham, 0E1 Edinburgh, 0G1 Glasgow, 0L1 Liverpool and 0M1 Manchester. However, these alphanumeric combinations were never used in this form and were published in all-figure form from the outset.
Robin Fairbairns comments:
To harp back to the question at the top of the thread, which talked about Abingdon, the first time the question of where "235" came from arose, Brian HK slapped me down for saying that it was "originally" 0AD5 -- he believed it was 0BE5 (for Berkshire). Well, since that time, I've recovered from the shambles of my house move, and have located the little books in which I wrote down every code the first time I saw it. And, sure enough, Abingdon is 0AD5 in it; sadly (unlike some of the pages) there's no date for when I first saw that code, so we can't be sure whether it was before or after the move from Berks. to Oxon (where it is now: I think it was the border that moved rather than the town). I guess the likelihood is that the code allocators wavered between the two, and only made their decision after the change of county had been decided: they could delay the decision, of course, because Abingdon was relatively late in acquiring an automatic exchange.
Ian Jolly comments:
0352 = 0FL2 Flint <Mold> It has always been the Mold Charge Group/GSC since it was formed when Mold went Auto in 1969. Flint, at the time when the codes appear to have been allocated, was actually part of the Chester Charge Group parented on Chester (Level 914 off Chester), and not Mold. Flint was reparented on Mold when Mold went auto and was added to the Mold Charge group (together with several other exchanges in the Flintshire area which were moved off Chester onto Mold). In fact 0FL2 was never used as such, as the code did not come into use until well after All Figure Numbering.
0490 0GW0 Gwynedd <Corwen> Again never used as 0GW0 because Corwen was manual well into AFN days. Also Corwen was never in Gwynedd which had not come into existence in those days (pre1974 local government reorganisation) [However, it was in the historic realm of Gwynedd] Entry also infers that 'Gwynedd' is parented on the Corwen GSC when in fact 0490 is the Corwen GSC/Charge group.
Where you give a level from a GSC to a dependent charge group ie "0829 0TA9 Tarporley <Chester 93>" Should this not be Chester 93X as each exchange on the 0829 group needed further digits to access it until a linked numbering scheme in the charge group came into effect. In fact each exchange had its own direct route selected at Chester ie Tarporley was 933 off Chester. 0829 0TA9 could also have been Tarvin (0829 4).
"0836,(0??6) [Eigg charge group, later incorporated into Mallaig charge gp]." Was there ever a separate charge group for Eigg?. Eigg numbers were always part of the Mallaig LNS since a UAX13 was put in c1975 (when Mallaig went auto). Prior to that it was parented on Mallaig so would not have had STD access - same applies for others in the Small Isles.
Malcolm Ballinger comments:
I seem to recall that when these STD codes were originally set up only the first 2 letters were used in considering the code as in 322 = Dartford (DA2) and 325 = Darlington (DA5).
Peter Walker comments:
Another factor not mentioned is that where a GSC had dependant charge groups, all the charge groups had to have a different C digit. On incoming MF2 traffic, the GSC received the digits from C onwards, so this discriminated which charge group was wanted. I guess this may have made choice of C digit sometimes fall outside the 'biggest town first' rule.
Paul Ebling adds:
My version for what it's worth is that it went like this...
STD Access on Level "0".
Take two letters from the place name (or county if too many places begin with similar letters), e.g. IP from Ipswich.
Allocate the C digit to complete the code in order starting with 2 for the largest place, (GRimsby 0472 in this case), down through 3...9, then 0, then if desperate, 1.
The idea was that the greater amount of traffic would have a "short" C-digit, taking less time to pulse into the Register, thereby economising on the number of Registers needed. "1" as a C digit was avoided because of possible confusion with "I" - and if used was coupled with other digit(s) in the format:
Poole 0BO 13 (Bournemouth level 83)
The exception was that Barnstaple got 0BR1 - desperation in both the 022x and 027x decades! So we have:
0474 GRavesend
0475 GReenock
0476 GRantham
0477 HolmeS Chapel (I suspect) - A dependent Charge Group on Crewe AFAIK
0478 Portree (Skye) - was this a later allocation?
0479 GRantown on Spey
0470 Skye - was this a later allocation?
0471 Skye - was this a later allocation?
None of 0478 - 0471 in this list appeared in the London STD Code book for 1970 so far as I can see.Malcolm Ballinger suggests:
That may have been a factor in the differing codes mentioned for SKYE then but when the original system was set up transit had not been thought of though!
Peter Walker comments:
Transit was thought of quite early on, it was just very late in being implemented. Originally, it was planned to use 4 wire switches like Faraday ISC with back to back Motor Uniselectors, but as is well known, TXK4 pentaconta was finally adopted. Some TXK4 junctors did use 3000 type relays because they were modified from the original MU designs. Not many people know this! But whether the full logic of MF2 signalling sequences were known when the original STD numbering plan was designed is hard to say without more research. Can anyone remember STD codes being changed as part of transit roll-out?
Graeme Marett adds:
That may be true, but there were still many spare codes available at the time that transit was intoduced in the early '70's and presumably, the PO had been planning for its introduction for some time previous - knowing THQ, some considerable time!
Paul Ebling continues:
Actually, I think the "biggest town first" approach was fairly successful in avoiding "C-digit clashes". More by accident than design probably! Most GSCs large enough to sport several dependent charge groups (and / or a "Ring") probably had a C digit of 2, 3 or 4. Brighton, Cambridge, Leicester, King's Lynn and Peterborough were all a C digit of 3 for example. Dependent charge groups tended to be in the 7, 8 ,9, 0 or 1 area. [The neat exception to this was Romford GSC 0708 with Hornchurch as a dependant charge group on 0402!] So the danger was usually two dependent charge groups with the same C digit.
I fancy Market Harborough with 0645 may have been the only significant clash - I recall a thread some time ago giving this as the reason why 0645 was ceased, and hence in due course was spare to give to "Mercury 0345".
No doubt some of you guys will know of any others. Some may perhaps have been resolved when the "0O" codes were replaced - maybe by then the Transit limitations would have been realised?
It is possible, of course, that some other dependent charge groups may have had a code change before incoming access was opened up. The delay in opening such access was due to either a Manual exchange surviving as GSC - Abingdon, Newbury, Dover, Hastings, Redhill etc, or alternatively to digit limitations in controlling registers. They could just about get enough digits to route to King's Lynn, say, but not the extra 93 for the Swaffham group [ 0SM0 0760 ] Nearby charge groups would not have needed the STD code - they would have dialled a local call using 9 into their GSC, then say 91 to King's Lynn and 93 out to Swaffham. More distant places probably had a limited "community of interest" anyway.
Market Harborough
Market Harborough used to be 0MH5 - 0645. The reason for the code change was something to do with the fact that not all trunk switching centres were directly interconnected and also bound up with limitations in the register-translators at originating exchanges, which in turn is why places like Market Harborough had to be issued new STD code and Nuneaton transfreed into the Coventry linked numbering scheme. Roger Harris can chime in and explain this better; he understands it fully. It was not until after Transit had been implemented (after 1967) that things started to improve in this respect.
'Brian' comments:
> But some parts of the country had local codes for exchanges within the parent GSCs group which required more digits; or, alternatively, allowance might be being made for possible expansion to longer "local" numbers on the minor exchanges. Example: off Preston GSC (0772) - Longridge and Hesketh Bank. Longridge was a UAX14 (4-digit scheme) and Hesketh Bank a 4-digit Remote Non-Director. The local dialling codes were, respectively 878 and 873. Thus the obvious codes, using Preston, of 0772 878 xxxx and 0772 873 xxxx would never work. and a 'Ring' Number Group Code of 0774 was used. This translated into 0772 + 8, allowing the codes 0774 78 xxxx and 0774 73 xxxx to succeed. For terminal Transit traffic the I/C R/Ts would add the 8 themselves, on receipt of the C-digit of 4. They also added the digits '94' on receipt of the C-digit of 5 for the Garstang dependant charge group (0995). Now, as you say, these arrangements no longer apply. Longridge, for example, having the '78' as part of its Directory numbers, merged into what is in effect, Preston's Linked Numbering Scheme.
Brian Hamilton Kelly comments:
When STD was first being planned in the early 1950s, it was recognized that it would be impossible to allocate THREE-letter mnemonics to places, even thought this had been done for many years in London and other director cities. The difference was that in those places, arbitrary exchanged names could be created, such as FREemantle and FRObisher. So a policy decision was taken such that STD codes should consist of the introductory zero, followed by TWO letters AND a digit (except for the 01 and 0x1 codes for the director cities). I seem to recall that Barnstaple was published as 0BP1 [Fx: checks old books; yes, definitely so]. Why go for BarnstaPle when BarnStaple also fitted the pattern, and moreover used the initial letters of syllables?
> 0470 Skye - was this a later allocation? The Edinbane charging group.
> 0471 Skye - was this a later allocation? The Broadford charging group.
> None of 0478 - 0471 in this list appeared in the London STD Code book for> 1970 so far as I can see. That's because they were inaccessible at that time; they (all four of them) appear in the 1975 booklet, although still with a obelos to indicate that one still needed to "Dial 100 for the present... The operator will tell you when you can dial the call yourself at STD rates, using the code above". The 047x therein stands for 0ISx, for Isle of Skye, of course. So I would guess that these are original allocations. Unlike those for groups such as Stornoway, Benbecula, etc., which originally had 0OHx codes for Outer Hebrides.> Thought Romford/Hornchuch had identical call charges just wern't enough 0708 digits to go round, seem to recall a place called Ingrebourne which sort of covered East Romford (Gidea Park area).
Correct; the 0HO2 area code (mnenomic for Hornchurch) was indeed the "ring" for 0RO8 (Romford). It was not, as the orignal poster had it, a "dependent charging group". Many of these rings existed because the RTs at originating exchanges couldn't pulse out sufficient digits to reach the local exchange. For example, Shoeburyness originally had four-digit numbers, and the STD code 0ES08. Its parent exchange was Southend-on-Sea (0SO2), from which local subscribers would dial 28 to reach Shoeburyness; therefore one might have expected the published code to have been 0SO228 (and I think that this would in fact work). But some parts of the country had local codes for exchanges within the parent GSC's group which required more digits; or, alternatively, allowance might be being made for possible expansion to longer "local" numbers on the minor exchanges. Therefore many of these "ring" codes were allocated; the outgoing R/T at the originating GSC translated 0SO2 into appropriate digits to route (probably via L/K or CB) to Southend-on-Sea, and 0ES0 into the same route with a "2" on the end. As local exchanges became absorbed into the parent exchanges LNS, the need for these "rings" disappeared, and many of these codes were subject to "recovery"; subsequently, many of the allocations to mobile were taken from these recovered codes.> In the South East we got the Swanley charge group which had 3 GSCs Dartford 01322, Orpington 01689 and West Kent dependant charge group on Sevenoaks, think 01959. Ahem! The Swanley group has (not had) three numbering ranges, not three GSCs. These are indeed as you listed.
Paul Ebling continues:
You may be right, Malcolm, that Romford / Hornchurch were core & ring, rather than a dependent charge group situation. The point I was attempting to major on was that for incoming Transit discriminating on the C digit, most GSCs has a C digit in the range 2 - 5 and the dependent number groups or Charge groups in the range 6 - 9,0,1. Hornchurch was an exception, where the "Ring" may have contained more than the "Core" - and for this purpose a "Core and Ring" could create a C-digit clash in just the same way as a "Dependent Charge Group"
It was the Staines / Uxbridge / Slough charge group (called Iver Heath) that has / had three GSCs.
It had four numbering groups:
0784
0895
0753 / 0281 (Core and ring)
0022,0OC2 ArrOChar <HELENSBURGH> [Now 0301]
Note tenuous derivation of code if this is in fact how it was chosen.
0023,0OA3 OAKHAM [Now 0572]
0024,0OB4 OBAN [Now 0631]
0025,0OB5 TAYNUILT <OBAN> [Now 0866]
0027,0OB7 OBAN dependent numbering group [Now 0852]
0040,0OH0 OUTER HEBRIDES <STORNOWAY> [Now 0850]
0042,0OG2 OGMORE [Bridgend] [Now 0656]
0043,engineering test
0044,0OH4 OUTER HEBRIDES <STORNOWAY> [Now 0851]
0047,0OH7 OUTER HEBRIDES <BENBECULA> [Now 0871]
0052,0OK2 OKEHAMPTON [Now 0837]
0055,0OL5 OLD MELDRUM <ABERDEEN> [Now 0651] [later allocated to BT Talkabout]
0056,engineering test
0062,0ON2 (ONICH?) <FORT WILLIAM> [Now 0855]
0063,0OM3 OMAGH (NORTHERN IRELAND) [Now 0662]
0066, not allocated [later allocated to BT Supercall]
0072,0OR2 ORPINGTON [Now 0689]
0073,0OS3 OSWESTRY [Now 0691]
0074,0OR4 ORMSKIRK [Now 0695]
0075,0OR5 ORMSKIRK dependent exchanges
0076,0OR6 ORKNEY <KIRKWALL> [Now 0856]
0077,0OR7 ORKNEY <KIRKWALL> [Now 0857]
0078,0OR8 ORKNEY <KIRKWALL> [Now 0856, codes combined] ???????
0080,enginering test
0082,0OU2 OUNDLE <PETERBOROUGH> [Now 0832]
0083,engineering test
0084,engineering test
0085,0OU5 OUNDLE <KETTERING> [Now 0801]
0086,0OT6 OTTERBURN <NEWCASTLE> [Now 0830]
0087,engineering test
0088,engineering test
0089,engineering test
0092,0OX2 OXFORD core [Now 0865]
0093,0OX3 OXTED <CATERHAM> [Now 0883]
0095,0OX5 OXFORD 91 dependent number group [Now 0869]
0096,0OX6 OXFORD 8 ring [Now 0867]
01,LONDON
0200,0CO0 CLITHEROE <BLACKBURN 93>
0201,0BO1 formerly BOURNEMOUTH 8 ring
0202,0BO2 BOURNEMOUTH core
0203,0CO3 COVENTRY
0204,0BO4 BOLTON
0205,0BO5 BOSTON
0206,0CO5 COLCHESTER
0207,0CO7 CONSETT <NEWCASTLE 93>
0208,0BO8 BODMIN
0209,0CO9 CORNWALL <TRURO 92> [Redruth charge group]
021,BIRMINGHAM
0210,engineering test
0220,0CA0 CAMBRIDGE 8 ring
0221,0BA1 BATH 8 ring
0222,0CA2 CARDIFF
0223,0CA3 CAMBRIDGE core
0224,0AB4 ABERDEEN
0225,0BA5 BATH core
0226,0BA6 BARNSLEY
0227,0CA7 CANTERBURY
0228,0CA8 CARLISLE
0229,0BA9 BARROW IN FURNESS
0230,0BE0 BEDFORD 8 ring
0231,0BE1 BELFAST ring
0232,0BE2 BELFAST core
0233,(0AD3) ASHFORD (KENT)
0234,0BE4 BEDFORD core
0235,0AD5 ABINGDON
0BE5 for BErkshire would also have been appropriate for the surrounding villages but it appears this was not used (see Robin Fairbairns's notes above).
0236,0AD6 & 0CE6 AIRDRIE & COATBRIDGE <COATBRIDGE>
Also OCD6 for CumbernaulD?
0237,0BD7 BIDEFORD <BARNSTAPLE 94>
0238,0BE8 BELFAST 9 dependent charge group
0239,0CD9 CARDIGAN
0240,0CH0 CHILTERN ring <HIGH WYCOMBE 8>
0CH0 Chalfont and Chesham would have been appropriate too
0241,0AH1 ARBROATH [Dundee 91]
0242,0CH2 CHELTENHAM
0243,0CH3 CHICHESTER
0244,0CH4 CHESTER
0245,0CH5 CHELMSFORD
0246,0CH6 CHESTERFIELD
0247,0BG7 BANGOR (CO. DOWN)
0248,0BG8 BANGOR (N. WALES)
0249,0CH9 CHIPPENHAM
0250,0BL0 BLAIRGOWRIE
0251,0AL1 ALDERSHOT 8 ring
0252,0AL2 ALDERSHOT core
0253,0BL3 BLACKPOOL
0254,0BL4 BLACKBURN
0255,0CL5 CLACTON ON SEA
0256,0BK6 BASINGSTOKE
0257,0CL7 CHORLEY <WIGAN 94>
0258,0BL8 BLANDFORD <BOURNEMOUTH 94>
0259,0AL9 ALLOA <STIRLING 91>
0260,0CN0 CONGLETON <MACCLESFIELD 9>
0261,0BN1 BANFF <HUNTLEY 91>
0262,0BN2 BRIDLINGTON
0263,0CR3 CROMER
0264,0AN4 ANDOVER
0265,0CN5 COLERAINE
0266,0BM6 BALLYMENA
0267,0CM7 CARMARTHEN
0268,0BN8 BASILDON ring
0269,0AM9 AMMANFORD
0270,0CR0 CREWE core
0271,0BP1 BARNSTAPLE
0272,0BR2 BRISTOL core
0273,0BR3 BRIGHTON core
0274,0BR4 BRADFORD core
0275,0BR5 BRISTOL 8 ring
0276,0CR6 CAMBERLEY [also 0AS6 ASCOT and 0BR6 BRACKNELL—codes intended but not used—and possibly also 0BS6 BAGSHOT]
0277,0BR7 BRENTWOOD
0278,0BR8 BRIDGWATER
0279,0BS9 BISHOPS STORTFORD
0280,0BU0 BUCKINGHAM <BANBURY 96>
0281,0BU1 BUCKINGHAMSHIRE <SLOUGH 6 ring>
0282,0BU2 BURNLEY
0283,0BU3 BURTON ON TRENT
0284,0BU4 BURY ST EDMUNDS
0285,0CT5 CIRENCESTER
0286,0CV6 CARNARVON
0287,0CV7 CLEVELAND <MIDDLESBROUGH 97>
0288,0BU8 BUDE
0289,0BT9 BERWICK UPON TWEED
0290,0AY0 AYR 92 [Cumnock charge group]
0291,0CW1 CHEPSTOW [Newport 91]
0292,0AY2 AYR
0293,0CY3 CRAWLEY
0294,0AY4 AYRSHIRE <ARDROSSAN/SALTCOATS>
0295,0BY5 BANBURY
0296,0AY6 AYLESBURY
0297,0AX7 AXMINSTER <HONITON 92>
0298,0BX8 BUXTON
0299,0BY9 BEWDLEY <KIDDERMINSTER 92>
0300,0DO0 DORCHESTER dependent exchanges <DORCHESTER 93>
0301,ARROCHAR <HELENSBURGH 92> [Post-AFN code, originally 0022]
0302,0DO2 DONCASTER
0303,0FO3 FOLKESTONE
0304,0DO4 DOVER
0305,0DO5 DORCHESTER
0306,0DO6 DORKING
0307,0FO7 FORFAR
0308,0DO8 DORCHESTER [Bridport] <DORCHESTER 92>
0309,0FO9 FORRES <ELGIN 92>
031,EDINBURGH
0320,0FA0 FORT AUGUSTUS <INVERNESS>
0321,0EB1 EASTBOURNE 8 ring
0322,0DA2 DARTFORD
0323,0EB3 EASTBOURNE core
0324,0FA4 FALKIRK
0325,0DA5 DARLINGTON
0326,0FA6 FALMOUTH <TRURO 91>
0327,0DA7 DAVENTRY <NORTHAMPTON 9>
0328,0FA8 FAKENHAM
0329,0FA9 FAREHAM <PORTSMOUTH 92>
0330,0DE0 DEESIDE <ABERDEEN 94>
0331,0DE1 DERBY 8 ring
0332,0DE2 DERBY core
0333,0FF3 FIFE <KIRKCALDY 92>
0334,0FF4 FIFE <CUPAR>
0335,0DE5 DERBYSHIRE [Derby 9]
0336,0DE0 DEESIDE <ALFORD>
0337,0FF7 FIFE <CUPAR 91> [Ladybank charge group]
0338,0DE8 DEESIDE [Ballater] <ABOYNE 9>
0339,0DE9 DEESIDE [Aboyne] <ABOYNE>
0340,0EG0 ELGIN [Dufftown] <ELGIN 93>
0341,0DG1 DOLGELLAU <MACHYNLLETH 92>
0342,0EG2 EAST GRINSTEAD
0343,0EG3 ELGIN
0344,0EH4 EASTHAMPSTEAD <BRACKNELL> [originally 0276]
0345,[03456111 was a temporary code used in Leeds for calls to Brigham and Brighouse, the so-called 4-unit fee exception] 0345,afterwards reserved for second code for Huddersfield, but now ...
0345,LINKLINE (LOCAL RATE)
0346,0FH6 FRASERBURGH <PETERHEAD 91>
0347,0EG7 EASINGWOLD <YORK 93>
0348,0FG8 FISHGUARD <HAVERFORDWEST 93>
0349,0DG9 DINGWALL
0350,0DK0 DUNKELD <PERTH 93>
0351,0FL1 FAIR ISLE <LERWICK>
0352,0FL2 FLINTSHIRE <MOLD>
0353,0EL3 ELY (CAMBS)
0354,0EL4 ELY <WISBECH 91>
We are unsure whether this really was intended to stand for ELY; if so, this is presumably because the code covered an adjacent or near-adjacent charge group. The only factor in favour of Ely is that the code covers March, in the sub-county of Ely.
0355,0EK5 EAST KILBRIDE <GLASGOW 81>
0356,0EK6 ESK [river] <MONTROSE>
0357,0EK7 EAST KILBRIDE <MOTHERWELL 93>
0358,0EL8 ELLON <ABERDEEN 96>
0359,(0EL9) ELMSWELL <BURY ST EDMUNDS 92>
0360,(0DN0) ENDRICK [named after Enfdrick Water]<GLASGOW 86>
0361,0DN1 DUNS <COLDSTREAM>
0362,0DM2 DEREHAM
0363,0DN3 DEVON <EXETER 92>
0364,0DN4 DEVON <NEWTON ABBOT 91>
0365,0EN5 ENNISKILLEN
0366,0DM6 DOWNHAM MARKET <KINGS LYNN 92>
0367,0FN7 FARINGDON <SWINDON 91>
0368,0DN8 DUNBAR <NORTH BERWICK 9>
0369,0DN9 DUNOON
0370,0ES0 ESSEX <SOUTHEND 2 ring>
0371,0ES1 ESSEX <GREAT DUNMOW>
0372,0ES2 ESHER
0373,0FR3 FROME
0374,0ES4 ESSEX <BASILDON ring>
0375,0ES5 ESSEX <GRAYS THURROCK>
0376,0ES6 ESSEX <BRAINTREE>
0377,0DR7 DRIFFIELD <BRIDLINGTON>
0378,0EP8 EPPING
0379,0DS9 DISS
0380,0DV0 DEVIZES
0381,(0FT1) FORTROSE <INVERNESS 96>
0382,0DU2 DUNDEE core
0383,0DU3 DUNFERMLINE
0384,0DU4 DUDLEY
0385,0DU5 DURHAM
0386,0EV6 EVESHAM
0387,0DU7 DUMFRIES
0388,(0DU8) DURHAM <BISHOP AUCKLAND>
0389,0DU9 DUMBARTON
0390,0EY0 EYEMOUTH <BERWICK ON TWEED 92>
0391,0FY1 FYLDE ring <BLACKPOOL 8>
0392,0EX2 EXETER
0393,0FX3 FOULA <LERWICK> [Note use of letter X as a cypher.]
0394,0FX4 FELIXSTOWE <IPSWICH 93>
0395,0EX5 EXMOUTH <EXETER 95>
0396,(0DW6) DOWNPATRICK
0397,0FW7 FORT WILLIAM
0398,0EX8 EXMOOR <TAUNTON 91>
0399,0DW9 DAWLEY <WELLINGTON> [Code reserved for new town but never used. See 0952.]
0400,HONINGTON <GRANTHAM 92>
0401,0HO1 HORNSEA <HULL 5>
0402,0HO2 HORNCHURCH <ROMFORD 8 ring>
0403,0HO3 HORSHAM
0404,0HO4 HONITON
0405,0GO5 GOOLE
0406,0HO6 HOLBEACH <SPALDING 94>
0407,0HO7 HOLYHEAD
0408,0GO8 GOLSPIE <TAIN>
0409,0HO9 HOLSWORTHY <BUDE 9>
041,GLASGOW
0420,0HA0 HANTS. <ALDERSHOT 94 ring>
0421,0HA1 HANTS. <SOUTHAMPTON 8 ring>
0422,0HA2 HALIFAX
0423,0HA3 HARROGATE
0424,0HA4 HASTINGS
0425,0HA5 HANTS. <BOURNEMOUTH 92>
0426,0HA6 HASTINGS ring [Code reserved but not used.]
0426,RADIOPAGING North of England
0427,0GA7 GAINSBOROUGH
0428,0HA8 HASLEMERE
0429,0HA9 HARTLEPOOL
0430,0GD0 GILBERDYKE <HULL 4> [0HD0 Howden would also fit.]
0431,0HE1 HELMSDALE <WICK>
0432,0HE2 HEREFORD
0433,0HE3 HATHERSAGE <SHEFFIELD 97>
0434,0HE4 HEXHAM
0435,0HE5 HEATHFIELD <TUNBRIDGE WELLS 91>
0436,0HE6 HELENSBURGH
0437,0HF7 HAVERFORDWEST
0438,0HE8 HERTFORDSHIRE <STEVENAGE>
0439,0HE9 HELMSLEY <MALTON 94>
0440,0HH0 HAVERHILL
0441,0GG1 GLAMORGAN <SWANSEA 8 ring>
0442,0HH2 HEMEL HEMPSTEAD
0443,0GG3 GLAMORGAN <PONTYPRIDD>
0444,0HH4 HAYWARDS HEATH
0445,0GH5 GAIRLOCH
0446,0GG6 GLAMORGAN <CARDIFF 9 dependent numbering group>
0447,0GG7 GLAMORGAN <CARDIFF 8 ring>
0448,0GG8 GRANGE OVER SANDS <KENDAL>
0449,0GG9 GIPPING [Stowmarket] <IPSWICH 96>
0450,0HK0 HAWICK
0451,0GL1 GLOS. <CHELTENHAM 92 dependent numbering group>
0452,0GL2 GLOUCESTER
0453,0GL3 GLOS. <DURSLEY>
0454,0GL4 GLOS. <BRISTOL 93 dependent numbering group>
0455,0HK5 HINCKLEY <LEICESTER 93>
0456,0GL6 GORTHLECK <INVERNESS 92>
0457,0GL7 GLOSSOP <MANCHESTER PIONEER 51>
0458,0GL8 GLASTONBURY <SHEPTON MALLETT 92>
0459,PRIVATE RADIOPAGING SERVICES [code originally spare]
0460,0IM0 ILMINSTER <TAUNTON 92>
0461,0GN1 GRETNA <DUMFRIES 92>
0462,0HN2 HITCHIN
0463,0IN3 INVERNESS
0464,0IN4 INSCH <INVERNESS> [Huntly 92]
0465,0GN5 GIRVAN
0466,0HN6 HUNTLY
0467,0IN7 INVERURIE <ABERDEEN 95>
0468,0IN8 INGLETON <LANCASTER 94>
0469,0IM9 IMMINGHAM <GRIMSBY 92>
0470,0IS0 ISLE OF SKYE <PORTREE>
0471,0IS1 ISLE OF SKYE <KYLE OF LOCHALSH>
0472,0GR2 GRIMSBY
0473,0IP3 IPSWICH core
0474,0GR4 GRAVESEND
0475,0GR5 GREENOCK
0476,0GR6 GRANTHAM
0477,0HS7 HOLMES CHAPEL <CREWE 92>
0478,0IS8 ISLE OF SKYE <PORTREE>
0479,0GS9 GRANTOWN ON SPEY
0480,0HU0 HUNTINGDON
0481,0GU1 GUERNSEY
0482,0HU2 HULL
0483,0GU3 GUILDFORD core
0484,0HU4 HUDDERSFIELD
0485,0HU5 HUNSTANTON <KINGS LYNN 91>
0486,0GU6 GUILDFORD 8 ring [Woking, etc.]
0487,0HU7 HUNTINGDON dependent exchanges <HUNTINGDON 92>
0488,0HU8 HUNGERFORD <NEWBURY>
0489,0HV9 HAMBLE VALLEY <SOUTHAMPTON 92>
0490,0GW0 GWYNEDD<CORWEN>
0491,0HY1 HENLEY ON THAMES <READING 92>
0492,0GW2 GWYNEDD <COLWYN BAY>
0493,0GY3 GREAT YARMOUTH
0494,0HW4 HIGH WYCOMBE core
0495,0GW5 GWENT <NEWPORT 9>
0496,0IY6 ISLE OF ISLAY <PORT ELLEN>
0497,0HW7 HAY ON WYE <HEREFORD 10>
0498,0HW8 HALTWHISTLE <HEXHAM 91>
0499,0IY9 INVERARAY (ARGYLL)
0500,0LO0 LOTHIANS <EDINBURGH 11>
[Edinburgh ring UAXs and ND, absorbed into Director area], now ...
0500,MERCURY FREEPHONE (code used in intervening years for Northwood permanent joint forces command bunker (allegedly) and Teletex gateway)
0501,0LO1 LOTHIANS <BATHGATE 92>
0502,0LO2 LOWESTOFT
0503,0LO3 LOOE <PLYMOUTH 80/94>
0504,0LO4 LONDONDERRY
0505,0JO5 JOHNSTONE (RENFREW)
0506,0LO6 LOTHIANS [Bathgate] <BATHGATE>
0507,0LO7 LOUTH (LINCS)
0508,0LO8 LODDON <NORWICH 93>
0509,0LO9 LOUGHBOROUGH <LEICESTER 92>
051,LIVERPOOL
0520,0LC0 LOCHCARRON <KYLE>
0521,0LC1 LINCS. <LOUTH 92>
0522,0LC2 LINCOLN
0523,0LA3 LANCASHIRE <WIGAN 8 ring>, now ...
0523,MERCURY RADIOPAGING [code originally spare]
0524,0LA4 LANCASTER
0525,0LB5 LEIGHTON BUZZARD <LUTON 91>
0526,0LC6 LINCS <LINCOLN 96>
0527,REDDITCH
[replacement code after GSC moved from Birmingham to Redditch, originally 0739.]
0528,0LA8 LAGGAN <GRANTOWN-ON-SPEY>
0529,(0LC9) LINCS. [Sleaford] <GRANTHAM 91>
0530,0LE0 LEICS <LEICESTER 96>
0531,0LE1 LEDBURY
0532,0LE2 LEEDS core
0533,0LE3 LEICESTER core
0534,0JE4 JERSEY
0535,0KE5 KEIGHLEY <BRADFORD 93>
0536,0KE6 KETTERING
0537,0LE7 LEICS <LEICESTER 4 ring>
0538,0LE8 LEEK <STOKE-ON-TRENT 92>
0539,0KE9 KENDAL
0540,0KG0 KINGUSSIE <GRANTOWN-ON-SPEY>
0541,0LH1 LANGHOLM <CARLISLE 98>
O542,0KH2 KEITH <ELGIN 91>
0543,0LH3 LICHFIELD <WALSALL 92>
0544,0KG4 KINGTON <HEREFORD 96>
0545,0LH5 LLANARTH <LANDYSSUL>
0546,0LG6 LOCHGILPHEAD
0547,0KH7 KNIGHTON <LUDLOW 92>
0548,0KG8 KINGSBRIDGE
0549,0LG9 LAIRG
0550,0LL0 LLANDOVERY <AMMANFORD 93>
0551,0LL1 LLANIDLOES <NEWTOWN>
0552,0LK2 LANARKSHIRE <MOTHERWELL 7 ring>
0553,0KL3 KINGS LYNN
0554,0LL4 LLANELLI <SWANSEA 93>
0555,0LK5 LANARK
0556,0KK6 KIRKCUDBRIGHTSHIRE <CASTLE DOUGLAS>
0557,0KK7 KIRKCUDBRIGHT <CASTLE DOUGLAS>
0558,0LL8 LLANDEILO <AMMANFORD 92>
0559,0LL9 LLANDYSSUL
0560,0KM0 KILMARNOCK 91 dependent exchanges
0561,0KN1 KINCARDINES. <MONTROSE>
0562,0KM2 KIDDERMINSTER
0563,0KM3 KILMARNOCK
0564,0KN4 KNOWLE <BIRMINGHAM NEWHALL 192>
0565,0KN5 KNUTSFORD
0566,0LN6 LAUNCESTON
0567,0KN7 KILLIN <CRIEFF 92>
0568,0LM8 LEOMINSTER
0569,0KN9 KINCARDINES. <ABERDEEN 92>
0570,0LR0 LAMPETER <LLANDYSSUL>
0571,0LR1 LOCHINVER <ULLAPOOL>
0572,OAKHAM [Post-AFN code, originally 0023]
0573,0KE3 KELSO <GALASHIELS 93>
0574,0LR4 LARNE (N. IRELAND)
0575,0KR5 KIRRIEMUIR <FORFAR 91>
0576,0LR6 LOCKERBIE <DUMFRIES 93>
0577,0KR7 KINROSS <PERTH 92>
0578,0LR8 LAUDER <GALASHIELS 92>
0579,0LS9 LISKEARD <PLYMOUTH 93>
0580,0KT0 KENT <TUNBRIDGE WELLS> [Cranbrook charge group]
0581,0LU1 LUCE <STRANRAER 9>
0582,0LU2 LUTON (BEDS)
0583,0KT3 KINTYRE <CAMPBELLTOWN>
0584,0LU4 LUDLOW
0585,0LTK <01-LTK> [London Trunk Kingsway service PABX]
0585,0KV5 KESGRAVE <IPSWICH ring> [never used]
0586,0KT6 CAMPBELTOWN <KINTYRE>
0587,(0LU7) LUNE [Sedbergh] <KENDAL>
0588,0LU8 LUDLOW 91 dependent exchanges
0589,0LV9 LIVINGSTONE <EDINBURGH> [old code, now 0506]
0590,0LY0 LYMINGTON <SOUTHAMPTON 94>
0591,0LW1 LLANDRINDOD WELLS 97 dependent exchanges
[Llangammarch Wells/Llanwrtyd Wells]
0592,0KY2 KIRKCALDY
0593,0LY3 LYBSTER <WICK 9>
0594,0LY4 LYDNEY <GLOUCESTER 97>
0595,0LW5 LERWICK
0596,0KW6 KESWICK <PENRITH>
0597,0LW7 LLANDRINDOD WELLS
0598,0LY8 LYNTON <BARNSTAPLE 92>
0599,0KY9 KYLE OF LOCHALSH
0600,0MO0 MONMOUTH
0601,0NO1 NORTHAMPTON 8 ring
0602,0NO2 NOTTINGHAM core
0603,0NO3 NORWICH core
0604,0NO4 NORTHAMPTON core
0605,0NO5 NORFOLK <NORWICH 8 ring>
0606,0NO6 NORTHWICH
0607,0NO7 NOTTS. <NOTTINGHAM 3 ring>
0608,0NO8 CHIPPING NORTON
0609,0NO9 NORTHALLERTON
061,MANCHESTER
0620,0NB0 NORTH BERWICK
0621,0MA1 MALDON (ESSEX)
0622,0MA2 MAIDSTONE core
0623,0MA3 MANSFIELD
0624,0MA4 ISLE OF MAN <DOUGLAS>
0625,0MA5 MACCLESFIELD
0626,0NA6 NEWTON ABBOT
0627,0MA7 MAIDSTONE 8 ring
0628,0MA8 MAIDENHEAD
0629,0MA9 MATLOCK
0630,0MD0 MARKET DRAYTON
0631,OBAN [Post-AFN code, originally 0024]
0632,0NE2 NEWCASTLE UPON TYNE
0633,0NE3 NEWPORT MON.
0634,0ME4 MEDWAY <CHATHAM>
0635,0NE5 NEWBURY
0636,0NE6 NEWARK
0637,0NE7 NEWQUAY <TRURO 93>
0638,0NE8 NEWMARKET
0639,0NE9 NEATH
0640,0MG0 MALLAIG old code [now 0687].
0641,0MH1 MELVICH <THURSO 9>
0642,0MH2 MIDDLESBROUGH core
0643,0MH3 MINEHEAD
0644,0NG4 NEW GALLOWAY <CASTLE DOUGLAS>
0645,0MH5 MARKET HARBOROUGH old code [now 0858].
0646,0MH6 MILFORD HAVEN <HAVERFORDWEST 91>
0647,0MH7 MORETONHAMPSTEAD <EXETER 94>
0648,0MH8 MAGHERAFELT
0649,0MH9 MIDDLESBROUGH 7 ring [now absorbed in 0642]
0650,0ML0 MACHYNLLETH 93 dependent exchanges
0651,OLD MELDRUM [Post-AFN code, originally 0055] <ABERDEEN 93>
0652,0NL2 NORTH LINCS. <SCUNTHORPE 92>
0653,0ML3 MALTON (N.YORKS)
0654,0ML4 MACHYNLLETH
0655,0ML5 MAYBOLE <AYR>
0656,BRIDGEND [originally 0042]
0657,0ML7 MILLOM <BARROW-IN-FURNESS>
0658,0ML8 MID LINCS. [Horncastle] <LINCOLN 19>
0659,0NL9 NITHDALE <DUMFRIES>
0660,0NM0 NORTHUMBERLAND <HEXHAM 92>
0661,0NM1 NORTHUMBERLAND <NEWCASTLE 98>
0662,OMAGH [Post-AFN code, originally 0063]
0663,0NM3 NEW MILLS (DERBYS) <MANCHESTER PIONEER 31>
0664,0MM4 MELTON MOWBRAY
0665,0NM5 NORTHUMBERLAND <ALNWICK>
0666,0MM6 MALMESBURY <CHIPPENHAM 92>
0667,0NN7 NAIRN <INVERNESS 95>
0668,0NM8 NORTHUMBERLAND <ALNWICK 94>
0669,0NM9 NORTHUMBERLAND <ALNWICK 93>
0670,0MP0 MORPETH
0671,0NS1 NEWTON STEWART
0672,0MR2 MARLBOROUGH <SWINDON 92>
0673,0MR3 MARKET RASEN <LINCOLN 92>
0674,0MR4 MONTROSE
0675,0MR5 MERIDEN <BIRMINGHAM NEWHALL 193>
0676,0MR6 MERIDEN <COVENTRY 94>
0677,0NR7 NORTH RIDING <NORTHALLERTON 92>
0678,0MR8 MERIONETH [Bala] <CORWEN 9>
0679,0NR9 NEW ROMNEY <FOLKESTONE 97>
0680,0MU0 ISLE OF MULL <CRAIGNURE>
0681,0MU1 ISLE OF MULL <CRAIGNURE>
0682,0NU2 NUNEATON
[code abolished following absorbtion into Coventry linked numbering scheme]
0683,0MT3 MOFFAT <DUMFRIES 94>
0684,0MV4 MALVERN <WORCESTER 92>
0685,0MT5 MERTHYR TYDFIL
0686,0NT6 NEWTOWN
0687, MALLAIG [replacement code]
0688,0MU8 ISLE OF MULL <TOBERMORY>
0689,ORPINGTON [Post-AFN code, originally 0072]
0690,0NW0 NORTH WALES <COLWYN BAY 94>
0691,OSWESTRY [Post-AFN code, originally 0073]
0692,0NW2 NORTH WALSHAM <NORWICH 95>
0693,0NY3 NEWRY
0694,0MW4 MUCH WENLOCK [SHREWSBURY 96]
0695,ORMSKIRK [Post-AFN code for "Skelmersdale", originally 0075]
0696,0MW6 MARKET WEIGHTON <HULL 7>
0697,0NW7 NORTH WEST <CARLISLE 94>
0698,0MW8 MOTHERWELL
0699,0NW9 NORTH WEST <CARLISLE 93>
0700,0RO0 ROTHESAY
0701,0PO1 PORTSMOUTH 5 ring
0702,0SO2 SOUTHEND ON SEA core
0703,0SO3 SOUTHAMPTON core
0704,0SO4 SOUTHPORT
0705,0PO5 PORTSMOUTH core
0706,0RO6 ROCHDALE
0707,0PO7 POTTERS BAR
0708,0RO8 ROMFORD (ESSEX)
0709,0RO9 ROTHERHAM
0711-0710 METER TEST
071, previously reserved as gateway code to Mercury Communications Ltd's network, lated London inner area
0720,0SC0 SCILLONIA <PENZANCE 19>
0721,0PB1 PEEBLES <EDINBURGH 141>
0722,0SA2 SALISBURY
0723,0SC3 SCARBOROUGH
0724,0SC4 SCUNTHORPE
0725,0SA5 SALISBURY 94 dependent exchanges
0726,0SA6 ST. AUSTELL, also 0PA6 PAR (both codes used)
0727,0SA7 ST. ALBANS
0728,0SA8 SAXMUNDHAM
0729,0RB9 RIBBLESDALE <SKIPTON 93>
0730,0PE0 PETERSFIELD (HANTS)
0731,0PE1 PETERBOROUGH 8 ring
0732,0SE2 SEVENOAKS
0733,0PE3 PETERBOROUGH core
0734,0RE4 READING core
0735,0RE5 READING 3 ring
0736,0PE6 PENZANCE
0737,0RE7 REDHILL (SURREY)
0738,0PE8 PERTH
0739,0RE9 REDDITCH [old code, now 0527] <BIRMINGHAM NEWHALL 194>
0740,0SG0 SEDGEFIELD <MIDDLESBROUGH 93>
0741,0SH1 SHEFFIELD 8 ring [old code]
0742,0SH2 SHEFFIELD core
0743,0SH3 SHREWSBURY
0744,0SH4 ST.HELENS
0745,0RH5 RHYL
0746,0SH6 SHROPSHIRE [Bridgnorth] <WOLVERHAMPTON 92>
0747,0SH7 SHAFTESBURY
0748,ORH8 RICHMOND (N.YORKS)
0749,0SH9 SHEPTON MALLET
0750,0SK0 SELKIRK <GALASHIELS 94>
0751,0PK1 PICKERING <MALTON 91>
0752,0PL2 PLYMOUTH core
0753,0SL3 SLOUGH core
0754,0SK4 SKEGNESS
0755,0PL5 PLYMOUTH 8 ring
0756,0SK6 SKIPTON
0757,0SL7 SELBY
0758,0PL8 PWLLHELI
0759,0PK9 POCKLINGTON <YORK 92>
0760,0SM0 SWAFFHAM <KINGS LYNN 93>
0761,0SM1 SOMERSET <BRISTOL 97>
0762,0PN2 PORTADOWN
0763,0RN3 ROYSTON (HERTS)
0764,0SN4 STRATHEARN <CRIEFF>
0765,0RN5 RIPON
0766,0PM6 PORTHMADOG
0767,0SN7 SANDY <BEDFORD 91>
0768,0PN8 PENRITH
0769,0SM9 SOUTH MOLTON <BARNSTAPLE 93>
0770,0RR0 ISLE OF ARRAN <BRODICK>
0771,0PR1 PETERHEAD 92 dependent numbering group
0772,0PR2 PRESTON (LANCS) core
0773,0RP3 RIPLEY
0774,0PR4 PRESTON 8 ring
0775,0SP5 SPALDING
0776,0SR6 STRANRAER
0777,0RR7 RETFORD
0778,0SP8 SPALDING 93 dependent numbering group
0779,0PR9 PETERHEAD
0780,0ST0 STAMFORD
0781,0ST1 STOKE ON TRENT 7 ring
0782,0ST2 STOKE ON TRENT core
0783,0SU3 SUNDERLAND
0784,0ST4 STAINES
0785,0ST5 STAFFORD
0786,0ST6 STIRLING
0787,0SU7 SUDBURY <COLCHESTER 93>
0788,0RU8 RUGBY
0789,0ST9 STRATFORD UPON AVON
0790,0SY0 SPILSBY <SKEGNESS 93>
0791,0SX1 SUSSEX <BRIGHTON 8 ring>
0792,0SW2 SWANSEA core
0793,0SW3 SWINDON
0794,0RY4 ROMSEY <SOUTHAMPTON 93>
0795,0SW5 SWALE <SITTINGBOURNE>
0796,0PY6 PITLOCHRY
0797,0RY7 RYE <HASTINGS>
0798,0SX8 SUSSEX [Petworth] <HORSHAM 93>
0799,0SW9 SAFFRON WALDEN
0800,0TO0 TONGUE <THURSO> [old code] [later allocated to 0800LIinkline (free to caller)]
0801,KETTERING 94 dependent exchanges [Post-AFN code, originally 0085]
0802,SPARE
0803,0TO3 TORQUAY core
0804,0TO4 TORQUAY 8 ring
0805,0TO5 TORRINGTON <BARNSTAPLE 95>
0806,0VO6 VOE <LERWICK>
0807,0TO7 TOMINTOUL <ELGIN 10>
0808,0TO8 TOMATIN <INVERNESS 93>
0809,0TO9 TOMDOUN <FORT AUGUSTUS> ... ??? OR <FORT WILLIAM> ???
081,now LONDON outer area
0820, RATHFRILAND (code originally spare) <PORTADOWN>
0821,0TA1 TAYSIDE <PERTH 94 dependent numbering group>
0822,0TA2 TAVISTOCK
0823,0TA3 TAUNTON
0824,(0VC4) VALE OF CLWYD [Ruthin] <WREXHAM 95>
0825,0UC5 UCKFIELD
0826,0TA6 TAYSIDE <DUNDEE 5 ring>
0827,0TA7 TAMWORTH
0828,0TA8 TAYSIDE <DUNDEE 95>
0829,0TA9 TARPORLEY <CHESTER 93> [Might have stood for TArvin.]
0830,OTTERBURN [originally 0086] <NEWCASTLE 90>
0831,RACAL VODAFONE
0832,OUNDLE <PETERBOROUGH 92> [Post-AFN code, originally 0082]
0833,0TE3 TEESDALE <DARLINGTON>
0834,0TE4 TENBY
0835,(0TE5) TEVIOT <GALASHIELS 95>
0836,(0??6) [Eigg charge group, later incorporated into Mallaig charge gp] This code was probably reserved without consideration for letters. {later allocated to Racal Vodafone]
0837,OKEHAMPTON [Post-AFN code, originally 0052]
0838,(0TD8) TYNDRUM <OBAN dependent numbering group>
0839,0TE9 (TEESIDE?) <MIDDLESBROUGH>
0840,0TG0 TINTAGEL [Otterham] <BODMIN 91>
0841,0TH1 TREVOSE HEAD <BODMIN 93>
0842,0TH2 THETFORD
0843,0TH3 THANET
0844,0TH4 THAME <OXFORD 94>
0845,0TH5 THIRSK <NORTHALLERTON>
0846,LISBURN [code originally spare] <BELFAST>
0847,0TH7 THURSO
0848,0TH8 THORNHILL <DUMFRIES 95>
0849,ANTRIM [code originally spare] <BELFAST>
0850,STORNOWAY [Post-AFN code, originally 0040]
0851,ISLE OF LEWIS <STORNOWAY> [Post-AFN code, originally 0044]
0852,OBAN dependent numbering group [originally 0026]
0853,(0UL3) ULLSWATER [PENRITH 93 dependent numbering group]
0854,0UL4 ULLAPOOL
0855,FORT WILLIAM 9 dependent exchanges [Post-AFN code, originally 0062]
0856,ORKNEY <KIRKWALL> [Post-AFN code, originally 0076]
0857,ORKNEY <KIRKWALL> [Post-AFN code, originally 0077]
0858,MARKET HARBOROUGH [originally 0645]
0859,ISLE OF HARRIS [Post-AFN code, previously 0046]
0860,not allocated originally [Later allocated to Cellnet]
0861,CO. TYRONE <PORTADOWN> [Post-AFN code, originally spare]
0862,0TN2 TAIN
0863,0TN3 TAIN dependent numbering group
0864,0TN4 TINTO HILLS <LANARK 93 dependent numbering group]
0865,OXFORD core [Post-AFN code, originally 0092]
0866,TAYNUILT <OBAN> [Post-AFN code, originally 0025]
0867,OXFORD 8 ring [Post-AFN code, originally 0096]
0868,CO.TYRONE <PORTADOWN/BELFAST> [Post-AFN code, originally spare]
0869,OXFORD 91dependent numbering group [Post-AFN code, originally 0095]
0870,0US0 UIST <BENBECULA>
0871,ISLE OF BARRA <BENBECULA> [Post-AFN code, originally 0047]
0872,0TR2 TRURO
0873,0US3 USK VALLEY <ABERGAVENNY>
0874,0US4 USK VALLEY <BRECON>
0875,0TR5 TRANENT <EDINBURGH 193>
0876,0US6 UIST <BENBECULA>
0877,0TR7 TROSSACHS <STIRLING 93>
0878,0US8 UIST <BENBECULA>
0879,0TR9 TOBERMORY <TOBERMORY> [might have stood for TIREE, BHK says TiRee]
0880,0TR0 TARBERT <LOCHGILPHEAD>
0881,SPARE
0882,0TU2 TUMMEL <PITLOCHRY> [River Tummel]
0883,CATERHAM [Post-AFN code, originally 0093]
0884,0TV4 TIVERTON <EXETER 93>
0885,0TV5 TEME VALLEY <HEREFORD>
[STD code serves Bromyard, which is not in the Teme Valley, but is in the same charge group as 0TV6.]
0886,0TV6 TEME VALLEY <WORCESTER 93>
0887,0TV7 TAY VALLEY <PITLOCHRY>
[Strath Tay would be the more correct form, but would not fit the STD code.]
0888,0TU8 TURRIFF <HUNTLY 93>
0889,0TV9 TRENT VALLEY <STAFFORD 9>[0UT9 Uttoxter would have fitted]
0890,0TW0 TWEED <COLDSTREAM>
0891,CALLSTREAM A RATE [code originally spare]
0892,0TW2 TUNBRIDGE WELLS
0894,0TY4 TYNE, TYNESIDE [both forms of the name were used] <NEWCASTLE 4 ring>, now CALLSTREAM B1 RATE
0895,0UX5 UXBRIDGE
0896,0TW6 TWEED <GALASHIELS>
0897,CALLSTREAM B RATE [code originally spare]
0898,CALLSTREAM D RATE [code originally spare]
0899,0TW9 TWEED <LANARK 92>
0900,0WO0 WORKINGTON
0901,0YO1 YORKS. <HARROGATE 93>
0902,0WO2 WOLVERHAMPTON core
0903,0WO3 WORTHING core
0904,0YO4 YORK
0905,0WO5 WORCESTER
0906,0WO6 WORTHING 8 ring
0907,0WO7 WOLVERHAMPTON 8 ring
0908,0WO8 WOLVERTON <BEDFORD 94> [now probably a GSC of its own serving Milton Keynes]
0909,0WO9 WORKSOP
091(2),TYNESIDE }
091(3),DURHAM } Linked Numbering Scheme
091(4),TYNESIDE } [Code originally test]
091(5),WEARSIDE }
0916,engineering test
0920,0WA0 WARE
0922,0WA2 WALSALL
0923,0WA3 WATFORD core
0924,0WA4 WAKEFIELD
0925,0WA5 WARRINGTON
0926,0WA6 WARWICK
0927,0WA7 WATFORD 8 ring
0928,0WA8 WARRINGTON 93 dependent number group [Runcorn]
<WARRINGTON>
0929,0WA9 WAREHAM <BOURNEMOUTH 93>
0930,0WE0 WESTMORLAND [Kirkby Stephen]) <PENRITH 95>
0931,0WE1 WESTMORLAND <PENRITH 92>
0932,0WE2 WEYBRIDGE
0933,0WE3 WELLINGBOROUGH <KETTERING 92>
0934,0WE4 WESTON SUPER MARE
0935,0YE5 YEOVIL
0936,CREWE 8 ring [code originally spare, but 0WE6 - WEaver - would fit]
0937,0WE7 WETHERBY
0938,0WE8 WELSHPOOL
0939,0WE9 WEM <SHREWSBURY 92>
0940,0WH0 WHITEHAVEN dependent number group <WHITEHAVEN 92>
0941 ...... SCOURIE ????
0942,0WG2 WIGAN core
0943,0WH3 WHARFDALE <BRADFORD 94>
0944,0WH4 WEST HESLERTON <MALTON 93>
0945,0WH5 WISBECH
0946,0WH6 WHITEHAVEN
0947,0WH7 WHITBY
0948,0WH8 WHITCHURCH (SALOP)
0949,0WH9 WHATTON <NOTTINGHAM 92>
0950,0WK0 SANDWICK <LERWICK>
0951,COLONSAY <PORT ELLEN> [code originally spare]
0952,0WL2 WELLINGTON
0953,0WL3 WICKLEWOOD <ATTLEBOROUGH>
0954,0WL4 WILLINGHAM <CAMBRIDGE 93>
0955,0WK5 WICK (CAITHNESS)
0956,0WL6 WEARSDALE <BISHOP AUCKLAND 92> [Dependent charge group on Bishop Auckland, now incorporated as level 5 of Bishop Auckland.] [Later 0956 Mercury One To One PCN telephones]
0957,0YL7 MID YELL <BALTA SOUND>
0958,0WL8 WENSLEYDALE [Dependent charge group on Richmond. See 0969]
0959,0WK9 WEST KENT <SEVENOAKS>
0960,CARRICKFERGUS [code originally spare] <BELFAST or PORTADOWN>
0962,0WN2 WINCHESTER
0963,0WN3 WINCANTON <YEOVIL 91>
0964,0WN4 WITHERNSEA <HULL 6>
0965,0WN5 WIGTON <CARLISLE 92>
0966,0WN6 WINDERMERE <KENDAL>
0967,STRONTIAN (code originally spare)
0968,0WN8 WEST LINTON <EDINBURGH 195>
0969,WENSLEYDALE [replacement post-AFN code for 0958. 0WN9 fits but not used]
0970,0YS0 YSTWYTH <ABERYSTWYTH> [The name was selected because all 'obvious' 022x codes were used.]
0971,0WS1 WEST SUTHERLAND <SCOURIE>
0972,STRONTIAN dependent number group [code originally spare]
0973,0WR3 WEST RIDING <BRADFORD 8 ring> [later 0973 Orange PCN telephones]
0974,0YS4 YSTWYTH [ABERYSTWYTH 91 dependent exchanges]
0975,STRATHDON <ALFORD> [code originally spare]
0976,0WR6 WEST RIDING <LEEDS 8 ring>
0977,0WR7 WEST RIDING <PONTEFRACT>
0978,0WR8 WREXHAM
0980,0WT0 WILTSHIRE [Amesbury,etc.] <SALISBURY 95>
0981,0WV1 WYE VALLEY <HEREFORD> [code serves Golden Valley but Wye Valley name may be by association with near-adjacent other Wye Valley charge group.]
0982,0WV2 (WELLS or WYE VALLEY????) <LLANDRINDOD WELLS 92> [code serves Builth Wells]
0983,0WT3 ISLE OF WIGHT <RYDE>
0984,0WV4 WIVELISCOMBE <TAUNTON 93>
0985,0WT5 WARMINSTER <FROME 93>
0986,0WV6 WAVENEY <BUNGAY>
0988,0WT8 WIGTOWN <NEWTON STEWART>
0989,0WV9 WYE VALLEY <ROSS-ON-WYE>
0990,0WW0 WENTWORTH <ASCOT> [Code 0276 was originally selected for Ascot]
0991,(0WW1) WEST WALES <HAVERFORDWEST 92 dependent number group>
0992,0WX2 WALTHAM CROSS
0993,0WY3 WITNEY [0WW3 WYCHWOOD would also have been appropriate]
0994,0WW4 WEST WALES <CARMARTHEN dependent number group>
0995,0WY5 WYRE [Garstang] <PRESTON 94>
0996,0WW6 WILMSLOW <MANCHESTER PIONEER 21>
0997,0WY7 WYVIS [Strathpeffer] <DINGWALL 91>
0998,SPARE
0999,SPARE