Twin Towns in the UK
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| UK town | UK region | Overseas town/region | Overseas country |
| Abbotskerswell | Devon | Ardmore | Ireland |
| Abbotskerswell | Devon | Le Pre-D'Auge | France |
| Aberdare | Rhondda Cynon Taff | Montelimar | France |
| Aberdare | Rhondda Cynon Taff | Slagelse | Denmark |
| Aberdeen | Aberdeen | Bulawayo | Zimbabwe |
| Aberdeen | Aberdeen | Clermont-Ferrand | France |
| Aberdeen | Aberdeen | Gomel | Belarus |
| Aberdeen | Aberdeen | Regensburg | Germany |
| Aberdeen | Aberdeen | Stavanger | Norway |
| Aberdeen | Aberdeen | Tyumen Oblast | Russia |
| Aberdour | Fife | Corte Franca | Italy |
| Abergavenny | Monmouthshire | Beaupreau | France |
| Abergavenny | Monmouthshire | Ostringen | Germany |
| Abergavenny | Monmouthshire | Sarno | Italy |
| Abernethy | Perthshire And Kinross | Grisy-Suisnes | France |
| Aberystwyth | Cardiganshire | Kronberg | Germany |
| Aberystwyth | Cardiganshire | St-Brieuc | France |
| Abingdon | Oxfordshire | Lucca | Italy |
| Abingdon | Oxfordshire | Schongau | Germany |
| Abingdon | Oxfordshire | Argentan | France |
| Adisham | Kent | Campagne-Les-Hesdin | France |
| Adur | West Sussex | Zywiec | Poland |
| Adur | West Sussex | Riom | France |
| Alcester | Warwickshire | Vallet | France |
| Aldborough | Norfolk | Villiers St Denis | France |
| Alford | Lincolnshire | Conlie | France |
| Allesley | West Midlands | St-Jean-Soleymieux | France |
| Allington and Sedgebrook | Lincolnshire | Tuffe | France |
| Alnwick | Northumberland | Lagny-Sur-Marne | France |
| Alnwick | Northumberland | Time | Norway |
| Alnwick | Northumberland | Voerde | Germany |
| Alresford | Hampshire | Bricquebec | France |
| Alveston | South Gloucestershire | Courville-Sur-Evre | France |
| Amber Valley | Derbyshire | Blackstone Valley | USA |
| Amberley | Gloucestershire | Noisy-Sur-Ecole | France |
| Amersham | Buckinghamshire | Krynicia | Poland |
| Amersham | Buckinghamshire | Bensheim | Germany |
| Ammanford | Carmarthenshire | Breuillet | France |
| Andover | Hampshire | Goch | Germany |
| Andover | Hampshire | Redon | France |
| Anglesey | Anglesey | Dun Laoghaire - Rathdown | Ireland |
| Anglesey | Anglesey | Landkreis Saalkreis | Germany |
| Anglesey | Anglesey | Mafeteng | Lesotho |
| Angmering | West Sussex | Ouistreham | France |
| Annan | Dumfries & Galloway | Watermaal-Bosvoorde | Belgium |
| Anstruther | Fife | Bapaume | France |
| Ards | Co Down | Peoria | USA |
| Ards | Co Down | Kemi | Finland |
| Argyll & Bute | Argyll & Bute | Amberg-Sulzbach Lk | Germany |
| Argyll & Bute | Argyll & Bute | Gorey | Ireland |
| Argyll & Bute | Argyll & Bute | Korcula | Croatia |
| Argyll & Bute | Argyll & Bute | Thouares | France |
| Ashburton | Devon | Ashburton | New Zealand |
| Ashburton | Devon | Cleder | France |
| Ashby-De-La-Zouch | Leicestershire | Evans | USA |
| Ashby-De-La-Zouch | Leicestershire | Pithiviers | France |
| Ashford | Kent | Hopewell | USA |
| Ashford | Kent | Bad Munstereifel | Germany |
| Ashford | Kent | Fougeres | France |
| Ashton Keynes | Wiltshire | Grandchamp-Des-Fontaines | France |
| Ashton-Under-Lyne | Greater Manchester | Chaumont | France |
| Attleborough | Norfolk | Nueil Les Aubiers | France |
| Audley | Staffordshire | Aixe-Sur-Vienne | France |
| Axbridge | Somerset | Houlgate | France |
| Aylesbury | Buckinghamshire | Bourg-En-Bresse | France |
| Aylesham | Kent | Courrieres | France |
| Aylsham | Norfolk | La Chaussee St Victor | France |
| Ayr | South Ayrshire | St-Germain-En-Laye | France |
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