54 cities
| City | 2025 Pop. ↓ |
|---|---|
| Archway | 215,667 |
| Aberdeen | 212,300 |
| Aylesbury | 74,748 |
| Ashford | 62,787 |
| Aldershot | 61,339 |
| Acton | 53,689 |
| Ayr | 47,190 |
| Ashton-under-Lyne | 43,675 |
| Andover | 42,276 |
| Altrincham | 41,548 |
| Abingdon | 38,676 |
| Arnold | 37,873 |
| Airdrie | 37,130 |
| Accrington | 35,318 |
| Aston | 32,286 |
| Aberdare | 31,135 |
| Ashton in Makerfield | 29,039 |
| Ashington | 27,670 |
| Ashford | 27,382 |
| Acocks Green | 26,635 |
| Ammanford | 23,709 |
| Arbroath | 23,640 |
| Alfreton | 22,550 |
| Amersham | 21,731 |
| Alloa | 20,390 |
| Atherton | 20,149 |
| Ampthill | 20,026 |
| Antrim | 19,661 |
| Adwick le Street | 19,481 |
| Aberystwyth | 18,749 |
| Ascot | 17,899 |
| Abergele | 17,769 |
| Amersham on the Hill | 17,719 |
| Alton | 16,584 |
| Aldridge | 16,008 |
| Addlestone | 14,978 |
| Armagh | 14,801 |
| Abergavenny | 14,651 |
| Ashtead | 13,494 |
| Alsager | 13,347 |
| Abbey Wood | 13,000 |
| Armthorpe | 12,911 |
| Ashby de la Zouch | 12,370 |
| Armadale | 11,770 |
| Atherstone | 11,237 |
| Abertillery | 10,946 |
| Ardrossan | 10,930 |
| Attleborough | 10,549 |
| Abbots Langley | 10,472 |
| Annfield Plain | 10,406 |
| Abercarn | 10,118 |
| Amesbury | 10,116 |
| Aberkenfig | 10,083 |
| Abram | 10,074 |