102 cities
| City | 2025 Pop. ↓ |
|---|---|
| Southampton | 966,741 |
| Sheffield | 756,783 |
| Stoke-on-Trent | 396,812 |
| Sunderland | 349,162 |
| Swansea | 320,236 |
| Southend-on-Sea | 295,310 |
| Sutton | 187,600 |
| Swindon | 185,609 |
| Slough | 163,777 |
| Stockport | 139,052 |
| Saint Peters | 125,370 |
| Sutton Coldfield | 107,030 |
| St Helens | 102,555 |
| Solihull | 96,267 |
| Southport | 91,703 |
| Stevenage | 90,232 |
| St Albans | 88,448 |
| South Shields | 83,655 |
| Scunthorpe | 79,977 |
| Stockton-on-Tees | 79,957 |
| Salford | 72,750 |
| Shrewsbury | 71,715 |
| Southall | 70,000 |
| Stafford | 69,217 |
| Scarborough | 61,866 |
| Stroud | 60,155 |
| Stourbridge | 56,284 |
| Sale | 55,689 |
| South Croydon | 55,198 |
| Staines | 51,040 |
| Sittingbourne | 48,948 |
| South Benfleet | 48,824 |
| Salisbury | 46,332 |
| Sutton in Ashfield | 43,912 |
| Stretford | 41,953 |
| Swadlincote | 40,960 |
| Skelmersdale | 38,944 |
| Surbiton | 38,158 |
| Stirling | 37,670 |
| Strood | 33,381 |
| Shirley | 32,000 |
| Spalding | 31,588 |
| Saint Neots | 30,811 |
| Sevenoaks | 29,506 |
| Stanford-le-Hope | 28,725 |
| Shipley | 28,544 |
| Stratford-upon-Avon | 27,830 |
| Sunbury-on-Thames | 27,784 |
| Staveley | 25,719 |
| St Austell | 25,447 |
| Skegness | 24,876 |
| Selby | 24,859 |
| Sudbury | 23,835 |
| Stalybridge | 22,748 |
| Seaford | 22,584 |
| Seaham | 22,373 |
| Stanley | 21,938 |
| Swanley | 21,839 |
| Stowmarket | 21,028 |
| Stamford | 20,592 |
| Stourport-on-Severn | 20,586 |
| Sandown | 20,155 |
| Swinton | 20,000 |
| South Ockendon | 19,460 |
| Shoreham-by-Sea | 19,175 |
| South Elmsall | 18,835 |
| Southsea | 18,514 |
| Sandbach | 17,976 |
| Spennymoor | 17,766 |
| Sleaford | 17,359 |
| Saint Andrews | 16,800 |
| Swanscombe | 15,732 |
| Saltash | 15,566 |
| South Hayling | 15,485 |
| Saffron Walden | 15,210 |
| Sinfin | 15,128 |
| Skipton | 14,623 |
| Stone | 14,258 |
| Strabane | 14,198 |
| Stoke Gifford | 13,560 |
| Shepshed | 13,505 |
| Streetly | 13,251 |
| Stocksbridge | 13,069 |
| Street | 12,911 |
| Smethwick | 12,842 |
| Saltcoats | 12,800 |
| Sidmouth | 12,569 |
| Sheerness | 11,938 |
| Sandy | 11,657 |
| Syston | 11,508 |
| Stonehaven | 11,370 |
| Shirebrook | 10,885 |
| Shefford | 10,816 |
| Selsey | 10,550 |
| Stranraer | 10,510 |
| Swanage | 10,454 |
| Sidcup | 10,400 |
| Shepton Mallet | 10,369 |
| Snodland | 10,211 |
| Shepperton | 10,106 |
| Stenhousemuir | 10,050 |
| Saint Leonards-on-Sea | 10,001 |