47 cities
| City | 2025 Pop. ↓ |
|---|---|
| Reading | 355,596 |
| Rotherham | 117,618 |
| Rochdale | 97,550 |
| Royal Leamington Spa | 95,172 |
| Romford | 95,000 |
| Redditch | 82,253 |
| Rugby | 73,150 |
| Royal Tunbridge Wells | 68,910 |
| Rossendale | 67,400 |
| Runcorn | 62,872 |
| Rhondda | 59,450 |
| Reigate | 52,123 |
| Redhill | 51,559 |
| Redruth | 42,690 |
| Ramsgate | 38,624 |
| Rushden | 37,584 |
| Redcar | 37,203 |
| Radcliffe | 34,239 |
| Rutherglen | 31,180 |
| Ruislip | 31,000 |
| Rayleigh | 30,196 |
| Rochester | 28,671 |
| Ryde | 26,082 |
| Rhyl | 25,874 |
| Rhosllanerchrugog | 25,362 |
| Rugeley | 24,033 |
| Royton | 22,848 |
| Rawtenstall | 22,114 |
| Retford | 22,023 |
| Renfrew | 22,010 |
| Rottingdean | 21,756 |
| Ripley | 21,097 |
| Risca | 20,443 |
| Rawmarsh | 18,616 |
| Ramsbottom | 17,738 |
| Romsey | 17,161 |
| Rochford | 16,739 |
| Ripon | 16,363 |
| Ryton | 16,093 |
| Royston | 15,781 |
| Ringwood | 14,084 |
| Ryhope | 14,000 |
| Rosyth | 13,690 |
| Rustington | 13,210 |
| Rickmansworth | 12,043 |
| Royal Wootton Bassett | 11,265 |
| Ross on Wye | 10,582 |