ISO 3166-2:GB

ISO 3166-2:GB is an ISO standard which defines geocodes: it is the subset of ISO 3166-2 which applies to the United Kingdom.

The codes correspond to the administrative divisions of the UK:

England
- 34 counties with county councils (all shire counties excluding Berkshire)
- 32 London boroughs
- 36 Metropolitan boroughs
- 47 unitary authorities (including the Isles of Scilly)
- 1 city corporation (the City of London)
Northern Ireland
- 26 district council areas
Scotland
- 32 council areas
Wales
- 22 unitary authorities

The Channel Islands and the Isle of Man are not part of the UK, but ISO offers codes for them under "GB-".

The first part of each code is the ISO 3166-1 code GB for the United Kingdom, and the second part is a three-letter code, which is the same as in the British Standard BS 6879.

1 Newsletters
2 Codes
- 2.1 Alternate Welsh codes
3 Other codes
4 References
5 See also

Newsletters

ISO 3166-2:2002-05-21
ISO 3166-2:2007-04-17 - for the United Kingdom, redesignated "special area" as "city corporation".
ISO 3166-2:2007-11-28 - for the United Kingdom, modified the administrative structure.

Codes

Sorted by Code
`GB-ABD`	Aberdeenshire
`GB-ABE`	Aberdeen
`GB-AGB`	Argyll and Bute
`GB-AGY`	Isle of Anglesey
`GB-ANS`	Angus
`GB-ANT`	Antrim
`GB-ARD`	Ards
`GB-ARM`	Armagh
`GB-BAS`	Bath and North East Somerset (unitary authority)
`GB-BBD`	Blackburn with Darwen (unitary authority)
`GB-BDF`	Bedfordshire (county)
`GB-BDG`	Barking and Dagenham (London borough)
`GB-BEN`	Brent (London borough)
`GB-BEX`	Bexley (London borough)
`GB-BFS`	Belfast
`GB-BGE`	Bridgend
`GB-BGW`	Blaenau Gwent
`GB-BIR`	Birmingham (West Midlands district)
`GB-BKM`	Buckinghamshire (county)
`GB-BLA`	Ballymena
`GB-BLY`	Ballymoney
`GB-BMH`	Bournemouth (unitary authority)
`GB-BNB`	Banbridge
`GB-BNE`	Barnet (London borough)
`GB-BNH`	Brighton and Hove (unitary authority)
`GB-BNS`	Barnsley (South Yorkshire district)
`GB-BOL`	Bolton (Greater Manchester district)
`GB-BPL`	Blackpool (unitary authority)
`GB-BRC`	Bracknell Forest (unitary authority)
`GB-BRD`	Bradford (West Yorkshire district)
`GB-BRY`	Bromley (London borough)
`GB-BST`	Bristol, City of (unitary authority)
`GB-BUR`	Bury (Greater Manchester district)
`GB-CAM`	Cambridgeshire (county)
`GB-CAY`	Caerphilly
`GB-CGN`	Ceredigion
`GB-CGV`	Craigavon
`GB-CHS`	Cheshire (county)
`GB-CKF`	Carrickfergus
`GB-CKT`	Cookstown
`GB-CLD`	Calderdale (West Yorkshire district)
`GB-CLK`	Clackmannanshire
`GB-CLR`	Coleraine
`GB-CMA`	Cumbria (county)
`GB-CMD`	Camden (London borough)
`GB-CMN`	Carmarthenshire
`GB-CON`	Cornwall (county)
`GB-COV`	Coventry (West Midlands district)
`GB-CRF`	Cardiff
`GB-CRY`	Croydon (London borough)
`GB-CSR`	Castlereagh
`GB-CWY`	Conwy
`GB-DAL`	Darlington (unitary authority)
`GB-DBY`	Derbyshire (county)
`GB-DEN`	Denbighshire
`GB-DER`	Derby (unitary authority)
`GB-DEV`	Devon (county)
`GB-DGN`	Dungannon and South Tyrone
`GB-DGY`	Dumfries and Galloway
`GB-DNC`	Doncaster (South Yorkshire district)
`GB-DND`	Dundee
`GB-DOR`	Dorset (county)
`GB-DOW`	Down
`GB-DRY`	Derry
`GB-DUD`	Dudley (West Midlands district)
`GB-DUR`	Durham (county)
`GB-EAL`	Ealing (London borough)
`GB-EAY`	East Ayrshire
`GB-EDH`	Edinburgh
`GB-EDU`	East Dunbartonshire
`GB-ELN`	East Lothian
`GB-ELS`	Eilean Siar
`GB-ENF`	Enfield (London borough)
`GB-ERW`	East Renfrewshire
`GB-ERY`	East Riding of Yorkshire (unitary authority)
`GB-ESS`	Essex (county)
`GB-ESX`	East Sussex (county)
`GB-FAL`	Falkirk
`GB-FER`	Fermanagh
`GB-FIF`	Fife
`GB-FLN`	Flintshire
`GB-GAT`	Gateshead (Tyne & Wear district)
`GB-GLG`	Glasgow
`GB-GLS`	Gloucestershire (county)
`GB-GRE`	Greenwich (London borough)
`GB-GSY`	Guernsey
`GB-GWN`	Gwynedd
`GB-HAL`	Halton (unitary authority)
`GB-HAM`	Hampshire (county)
`GB-HAV`	Havering (London borough)
`GB-HCK`	Hackney (London borough)
`GB-HEF`	Herefordshire, County of (unitary authority)
`GB-HIL`	Hillingdon (London borough)
`GB-HLD`	Highland
`GB-HMF`	Hammersmith and Fulham (London borough)
`GB-HNS`	Hounslow (London borough)
`GB-HPL`	Hartlepool (unitary authority)
`GB-HRT`	Hertfordshire (county)
`GB-HRW`	Harrow (London borough)
`GB-HRY`	Haringey (London borough)
`GB-IOS`	Isles of Scilly (unitary authority)
`GB-IOW`	Isle of Wight (unitary authority)
`GB-ISL`	Islington (London borough)
`GB-IVC`	Inverclyde
`GB-JSY`	Jersey
`GB-KEC`	Kensington and Chelsea (London borough)
`GB-KEN`	Kent (county)
`GB-KHL`	Kingston upon Hull, City of (unitary authority)
`GB-KIR`	Kirklees (West Yorkshire district)
`GB-KTT`	Kingston upon Thames (London borough)
`GB-KWL`	Knowsley (Merseyside district)
`GB-LAN`	Lancashire (county)
`GB-LBH`	Lambeth (London borough)
`GB-LCE`	Leicester (unitary authority)
`GB-LDS`	Leeds (West Yorkshire district)
`GB-LEC`	Leicestershire (county)
`GB-LEW`	Lewisham (London borough)
`GB-LIN`	Lincolnshire (county)
`GB-LIV`	Liverpool (Merseyside district)
`GB-LMV`	Limavady
`GB-LND`	London, City of (city corporation)
`GB-LRN`	Larne
`GB-LSB`	Lisburn
`GB-LUT`	Luton (unitary authority)
`GB-MAN`	Manchester (Greater Manchester district)
`GB-MDB`	Middlesbrough (unitary authority)
`GB-MDW`	Medway (unitary authority)
`GB-MFT`	Magherafelt
`GB-MIK`	Milton Keynes (unitary authority)
`GB-MLN`	Midlothian
`GB-MON`	Monmouthshire
`GB-MRT`	Merton (London borough)
`GB-MRY`	Moray
`GB-MTY`	Merthyr Tydfil
`GB-MYL`	Moyle
`GB-NAY`	North Ayrshire
`GB-NBL`	Northumberland (county)
`GB-NDN`	North Down
`GB-NEL`	North East Lincolnshire (unitary authority)
`GB-NET`	Newcastle upon Tyne (Tyne & Wear district)
`GB-NFK`	Norfolk (county)
`GB-NGM`	Nottingham (unitary authority)
`GB-NLK`	North Lanarkshire
`GB-NLN`	North Lincolnshire (unitary authority)
`GB-NSM`	North Somerset (unitary authority)
`GB-NTA`	Newtownabbey
`GB-NTH`	Northamptonshire (county)
`GB-NTL`	Neath Port Talbot
`GB-NTT`	Nottinghamshire (county)
`GB-NTY`	North Tyneside (Tyne & Wear district)
`GB-NWM`	Newham (London borough)
`GB-NWP`	Newport
`GB-NYK`	North Yorkshire (county)
`GB-NYM`	Newry and Mourne
`GB-OLD`	Oldham (Greater Manchester district)
`GB-OMH`	Omagh
`GB-ORK`	Orkney Islands
`GB-OXF`	Oxfordshire (county)
`GB-PEM`	Pembrokeshire
`GB-PKN`	Perth and Kinross
`GB-PLY`	Plymouth (unitary authority)
`GB-POL`	Poole (unitary authority)
`GB-POR`	Portsmouth (unitary authority)
`GB-POW`	Powys
`GB-PTE`	Peterborough (unitary authority)
`GB-RCC`	Redcar and Cleveland (unitary authority)
`GB-RCH`	Rochdale (Greater Manchester district)
`GB-RCT`	Rhondda Cynon Taff
`GB-RDB`	Redbridge (London borough)
`GB-RDG`	Reading (unitary authority)
`GB-RFW`	Renfrewshire
`GB-RIC`	Richmond upon Thames (London borough)
`GB-ROT`	Rotherham (South Yorkshire district)
`GB-RUT`	Rutland (unitary authority)
`GB-SAW`	Sandwell (West Midlands district)
`GB-SAY`	South Ayrshire
`GB-SCB`	Scottish Borders, The
`GB-SFK`	Suffolk (county)
`GB-SFT`	Sefton (Merseyside district)
`GB-SGC`	South Gloucestershire (unitary authority)
`GB-SHF`	Sheffield (South Yorkshire district)
`GB-SHN`	St Helens (Merseyside district)
`GB-SHR`	Shropshire (county)
`GB-SKP`	Stockport (Greater Manchester district)
`GB-SLF`	Salford (Greater Manchester district)
`GB-SLG`	Slough (unitary authority)
`GB-SLK`	South Lanarkshire
`GB-SND`	Sunderland (Tyne & Wear district)
`GB-SOL`	Solihull (West Midlands district)
`GB-SOM`	Somerset (county)
`GB-SOS`	Southend-on-Sea (unitary authority)
`GB-SRY`	Surrey (county)
`GB-STB`	Strabane
`GB-STE`	Stoke-on-Trent (unitary authority)
`GB-STG`	Stirling
`GB-STH`	Southampton (unitary authority)
`GB-STN`	Sutton (London borough)
`GB-STS`	Staffordshire (county)
`GB-STT`	Stockton-on-Tees (unitary authority)
`GB-STY`	South Tyneside (Tyne & Wear district)
`GB-SWA`	Swansea
`GB-SWD`	Swindon (unitary authority)
`GB-SWK`	Southwark (London borough)
`GB-TAM`	Tameside (Greater Manchester district)
`GB-TFW`	Telford and Wrekin (unitary authority)
`GB-THR`	Thurrock (unitary authority)
`GB-TOB`	Torbay (unitary authority)
`GB-TOF`	Torfaen
`GB-TRF`	Trafford (Greater Manchester district)
`GB-TWH`	Tower Hamlets (London borough)
`GB-VGL`	Vale of Glamorgan
`GB-WAR`	Warwickshire (county)
`GB-WBK`	West Berkshire (unitary authority)
`GB-WDU`	West Dunbartonshire
`GB-WFT`	Waltham Forest (London borough)
`GB-WGN`	Wigan (Greater Manchester district)
`GB-WIL`	Wiltshire (county)
`GB-WKF`	Wakefield (West Yorkshire district)
`GB-WLL`	Walsall (West Midlands district)
`GB-WLN`	West Lothian
`GB-WLV`	Wolverhampton (West Midlands district)
`GB-WND`	Wandsworth (London borough)
`GB-WNM`	Windsor and Maidenhead (unitary authority)
`GB-WOK`	Wokingham (unitary authority)
`GB-WOR`	Worcestershire (county)
`GB-WRL`	Wirral (Merseyside district)
`GB-WRT`	Warrington (unitary authority)
`GB-WRX`	Wrexham
`GB-WSM`	Westminster (London borough)
`GB-WSX`	West Sussex (county)
`GB-YOR`	York (unitary authority)
`GB-ZET`	Shetland Islands

Sorted by Name
England
Barking and Dagenham (London borough)	`GB-BDG`
Barnet (London borough)	`GB-BNE`
Barnsley (South Yorkshire district)	`GB-BNS`
Bath and North East Somerset (unitary authority)	`GB-BAS`
Bedfordshire (county)	`GB-BDF`
Bexley (London borough)	`GB-BEX`
Birmingham (West Midlands district)	`GB-BIR`
Blackburn with Darwen (unitary authority)	`GB-BBD`
Blackpool (unitary authority)	`GB-BPL`
Bolton (Greater Manchester district)	`GB-BOL`
Bournemouth (unitary authority)	`GB-BMH`
Bracknell Forest (unitary authority)	`GB-BRC`
Bradford (West Yorkshire district)	`GB-BRD`
Brent (London borough)	`GB-BEN`
Brighton and Hove (unitary authority)	`GB-BNH`
Bristol, City of (unitary authority)	`GB-BST`
Bromley (London borough)	`GB-BRY`
Buckinghamshire (county)	`GB-BKM`
Bury (Greater Manchester district)	`GB-BUR`
Calderdale (West Yorkshire district)	`GB-CLD`
Cambridgeshire (county)	`GB-CAM`
Camden (London borough)	`GB-CMD`
Cheshire (county)	`GB-CHS`
Cornwall (county)	`GB-CON`
Coventry (West Midlands district)	`GB-COV`
Croydon (London borough)	`GB-CRY`
Cumbria (county)	`GB-CMA`
Darlington (unitary authority)	`GB-DAL`
Derby (unitary authority)	`GB-DER`
Derbyshire (county)	`GB-DBY`
Devon (county)	`GB-DEV`
Doncaster (South Yorkshire district)	`GB-DNC`
Dorset (county)	`GB-DOR`
Dudley (West Midlands district)	`GB-DUD`
Durham (county)	`GB-DUR`
Ealing (London borough)	`GB-EAL`
East Riding of Yorkshire (unitary authority)	`GB-ERY`
East Sussex (county)	`GB-ESX`
Enfield (London borough)	`GB-ENF`
Essex (county)	`GB-ESS`
Gateshead (Tyne & Wear district)	`GB-GAT`
Gloucestershire (county)	`GB-GLS`
Greenwich (London borough)	`GB-GRE`
Hackney (London borough)	`GB-HCK`
Halton (unitary authority)	`GB-HAL`
Hammersmith and Fulham (London borough)	`GB-HMF`
Hampshire (county)	`GB-HAM`
Haringey (London borough)	`GB-HRY`
Harrow (London borough)	`GB-HRW`
Hartlepool (unitary authority)	`GB-HPL`
Havering (London borough)	`GB-HAV`
Herefordshire, County of (unitary authority)	`GB-HEF`
Hertfordshire (county)	`GB-HRT`
Hillingdon (London borough)	`GB-HIL`
Hounslow (London borough)	`GB-HNS`
Isle of Wight (unitary authority)	`GB-IOW`
Isles of Scilly (unitary authority)	`GB-IOS`
Islington (London borough)	`GB-ISL`
Kensington and Chelsea (London borough)	`GB-KEC`
Kent (county)	`GB-KEN`
Kingston upon Hull, City of (unitary authority)	`GB-KHL`
Kingston upon Thames (London borough)	`GB-KTT`
Kirklees (West Yorkshire district)	`GB-KIR`
Knowsley (Merseyside district)	`GB-KWL`
Lambeth (London borough)	`GB-LBH`
Lancashire (county)	`GB-LAN`
Leeds (West Yorkshire district)	`GB-LDS`
Leicester (unitary authority)	`GB-LCE`
Leicestershire (county)	`GB-LEC`
Lewisham (London borough)	`GB-LEW`
Lincolnshire (county)	`GB-LIN`
Liverpool (Merseyside district)	`GB-LIV`
London, City of (city corporation)	`GB-LND`
Luton (unitary authority)	`GB-LUT`
Manchester (Greater Manchester district)	`GB-MAN`
Medway (unitary authority)	`GB-MDW`
Merton (London borough)	`GB-MRT`
Middlesbrough (unitary authority)	`GB-MDB`
Milton Keynes (unitary authority)	`GB-MIK`
Newcastle upon Tyne (Tyne & Wear district)	`GB-NET`
Newham (London borough)	`GB-NWM`
Norfolk (county)	`GB-NFK`
North East Lincolnshire (unitary authority)	`GB-NEL`
North Lincolnshire (unitary authority)	`GB-NLN`
North Somerset (unitary authority)	`GB-NSM`
North Tyneside (Tyne & Wear district)	`GB-NTY`
North Yorkshire (county)	`GB-NYK`
Northamptonshire (county)	`GB-NTH`
Northumberland (county)	`GB-NBL`
Nottingham (unitary authority)	`GB-NGM`
Nottinghamshire (county)	`GB-NTT`
Oldham (Greater Manchester district)	`GB-OLD`
Oxfordshire (county)	`GB-OXF`
Peterborough (unitary authority)	`GB-PTE`
Plymouth (unitary authority)	`GB-PLY`
Poole (unitary authority)	`GB-POL`
Portsmouth (unitary authority)	`GB-POR`
Reading (unitary authority)	`GB-RDG`
Redbridge (London borough)	`GB-RDB`
Redcar and Cleveland (unitary authority)	`GB-RCC`
Richmond upon Thames (London borough)	`GB-RIC`
Rochdale (Greater Manchester district)	`GB-RCH`
Rotherham (South Yorkshire district)	`GB-ROT`
Rutland (unitary authority)	`GB-RUT`
St Helens (Merseyside district)	`GB-SHN`
Salford (Greater Manchester district)	`GB-SLF`
Sandwell (West Midlands district)	`GB-SAW`
Sefton (Merseyside district)	`GB-SFT`
Sheffield (South Yorkshire district)	`GB-SHF`
Shropshire (county)	`GB-SHR`
Slough (unitary authority)	`GB-SLG`
Solihull (West Midlands district)	`GB-SOL`
Somerset (county)	`GB-SOM`
South Gloucestershire (unitary authority)	`GB-SGC`
South Tyneside (Tyne & Wear district)	`GB-STY`
Southampton (unitary authority)	`GB-STH`
Southend-on-Sea (unitary authority)	`GB-SOS`
Southwark (London borough)	`GB-SWK`
Staffordshire (county)	`GB-STS`
Stockport (Greater Manchester district)	`GB-SKP`
Stockton-on-Tees (unitary authority)	`GB-STT`
Stoke-on-Trent (unitary authority)	`GB-STE`
Suffolk (county)	`GB-SFK`
Sunderland (Tyne & Wear district)	`GB-SND`
Surrey (county)	`GB-SRY`
Sutton (London borough)	`GB-STN`
Swindon (unitary authority)	`GB-SWD`
Tameside (Greater Manchester district)	`GB-TAM`
Telford and Wrekin (unitary authority)	`GB-TFW`
Thurrock (unitary authority)	`GB-THR`
Torbay (unitary authority)	`GB-TOB`
Tower Hamlets (London borough)	`GB-TWH`
Trafford (Greater Manchester district)	`GB-TRF`
Wakefield (West Yorkshire district)	`GB-WKF`
Walsall (West Midlands district)	`GB-WLL`
Waltham Forest (London borough)	`GB-WFT`
Wandsworth (London borough)	`GB-WND`
Warrington (unitary authority)	`GB-WRT`
Warwickshire (county)	`GB-WAR`
West Berkshire (unitary authority)	`GB-WBK`
West Sussex (county)	`GB-WSX`
Westminster (London borough)	`GB-WSM`
Wigan (Greater Manchester district)	`GB-WGN`
Wiltshire (county)	`GB-WIL`
Windsor and Maidenhead (unitary authority)	`GB-WNM`
Wirral (Merseyside district)	`GB-WRL`
Wokingham (unitary authority)	`GB-WOK`
Wolverhampton (West Midlands district)	`GB-WLV`
Worcestershire (county)	`GB-WOR`
York (unitary authority)	`GB-YOR`
Northern Ireland
Antrim	`GB-ANT`
Ards	`GB-ARD`
Armagh	`GB-ARM`
Ballymena	`GB-BLA`
Ballymoney	`GB-BLY`
Banbridge	`GB-BNB`
Belfast	`GB-BFS`
Carrickfergus	`GB-CKF`
Castlereagh	`GB-CSR`
Coleraine	`GB-CLR`
Cookstown	`GB-CKT`
Craigavon	`GB-CGV`
Derry	`GB-DRY`
Down	`GB-DOW`
Dungannon and South Tyrone	`GB-DGN`
Fermanagh	`GB-FER`
Larne	`GB-LRN`
Limavady	`GB-LMV`
Lisburn	`GB-LSB`
Magherafelt	`GB-MFT`
Moyle	`GB-MYL`
Newry and Mourne	`GB-NYM`
Newtownabbey	`GB-NTA`
North Down	`GB-NDN`
Omagh	`GB-OMH`
Strabane	`GB-STB`
Scotland
Aberdeen	`GB-ABE`
Aberdeenshire	`GB-ABD`
Angus	`GB-ANS`
Argyll and Bute	`GB-AGB`
Clackmannanshire	`GB-CLK`
Dumfries and Galloway	`GB-DGY`
Dundee	`GB-DND`
East Ayrshire	`GB-EAY`
East Dunbartonshire	`GB-EDU`
East Lothian	`GB-ELN`
East Renfrewshire	`GB-ERW`
Edinburgh	`GB-EDH`
Eilean Siar	`GB-ELS`
Falkirk	`GB-FAL`
Fife	`GB-FIF`
Glasgow	`GB-GLG`
Highland	`GB-HLD`
Inverclyde	`GB-IVC`
Midlothian	`GB-MLN`
Moray	`GB-MRY`
North Ayrshire	`GB-NAY`
North Lanarkshire	`GB-NLK`
Orkney Islands	`GB-ORK`
Perth and Kinross	`GB-PKN`
Renfrewshire	`GB-RFW`
Scottish Borders, The	`GB-SCB`
Shetland Islands	`GB-ZET`
South Ayrshire	`GB-SAY`
South Lanarkshire	`GB-SLK`
Stirling	`GB-STG`
West Dunbartonshire	`GB-WDU`
West Lothian	`GB-WLN`
Wales
Blaenau Gwent	`GB-BGW`
Bridgend	`GB-BGE`
Caerphilly	`GB-CAY`
Cardiff	`GB-CRF`
Carmarthenshire	`GB-CMN`
Ceredigion	`GB-CGN`
Conwy	`GB-CWY`
Denbighshire	`GB-DEN`
Flintshire	`GB-FLN`
Gwynedd	`GB-GWN`
Isle of Anglesey	`GB-AGY`
Merthyr Tydfil	`GB-MTY`
Monmouthshire	`GB-MON`
Neath Port Talbot	`GB-NTL`
Newport	`GB-NWP`
Pembrokeshire	`GB-PEM`
Powys	`GB-POW`
Rhondda Cynon Taff	`GB-RCT`
Swansea	`GB-SWA`
Torfaen	`GB-TOF`
Vale of Glamorgan	`GB-VGL`
Wrexham	`GB-WRX`
Channel Islands
Guernsey	`GB-GSY`
Jersey	`GB-JSY`

Alternate Welsh codes

The ISO has also issued codes for some areas with Welsh names and codes.

Sorted by Code
`GB-POG`	Pen-y-bont ar Ogwr (Bridgend)
`GB-CAF`	Caerffili (Caerphilly)
`GB-CRD`	Caerdydd (Cardiff)
`GB-GFY`	Sir Gaerfyrddin (Carmarthenshire)
`GB-DDB`	Sir Ddinbych (Denbighshire)
`GB-FFL`	Sir y Fflint (Flintshire)
`GB-YNM`	Sir Ynys Môn (Isle of Anglesey)
`GB-MTU`	Merthyr Tudful (Merthyr Tydfil)
`GB-FYN`	Sir Fynwy (Monmouthshire)
`GB-CTL`	Castell-nedd Port Talbot (Neath Port Talbot)
`GB-CNW`	Casnewydd (Newport)
`GB-BNF`	Sir Benfro (Pembrokeshire)
`GB-ATA`	Abertawe (Swansea)
`GB-BMG`	Bro Morgannwg (Vale of Glamorgan)
`GB-WRC`	Wrecsam (Wrexham)

Other codes

These codes are used by the BS, and were added to ISO 3166-2 in Newsletter 9, with the exceptions of the Isle of Man and Channel Islands:

GB-UKM United Kingdom
- GB-GBN Great Britain
  - GB-EAW England and Wales
    - GB-ENG England
    - GB-WLS Wales (ISO also includes the Welsh version, CB-CYM for Cymru)
  - GB-SCT Scotland
- GB-NIR Northern Ireland
GB-IOM Isle of Man
GB-CHA Channel Islands

BS also has Welsh language code for Welsh names of Wales and its subdivisions, where they differ from the English language names. These are not listed here.

References

"Gazetteer for the Reorganised Statistical Regions and Local Authorities in the United Kingdom", Office for National Statistics, June 1997.
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