| Source | UN (World Urbanization Prospects 2025) |
| Date | 09 Feb 2026 |
| Code | City | Population | Share (%) | Rank | Change | |||
|---|---|---|---|---|---|---|---|---|
| 2025 | 2026 | UK | World | Population | (%) | |||
| Lond | London | 10,416,420 | 10,486,502 | 15.1 | 1 | 33 | 70,082 | 0.67 |
| Birm | Birmingham | 2,631,757 | 2,643,320 | 3.80 | 2 | 191 | 11,563 | 0.44 |
| Manc | Manchester | 2,535,427 | 2,541,887 | 3.65 | 3 | 198 | 6,460 | 0.25 |
| Live | Liverpool | 1,227,470 | 1,230,203 | 1.77 | 4 | 422 | 2,733 | 0.22 |
| Leed | Leeds | 1,065,607 | 1,069,849 | 1.54 | 5 | 481 | 4,242 | 0.40 |
| Glas | Glasgow | 970,320 | 972,041 | 1.40 | 6 | 539 | 1,721 | 0.18 |
| Newc | Newcastle upon Tyne | 760,969 | 762,907 | 1.10 | 7 | 704 | 1,938 | 0.25 |
| Nott | Nottingham | 649,610 | 651,144 | 0.936 | 8 | 836 | 1,534 | 0.24 |
| Bris | Bristol | 615,703 | 617,050 | 0.887 | 9 | 884 | 1,347 | 0.22 |
| Shef | Sheffield | 549,695 | 553,114 | 0.795 | 10 | 1000 | 3,419 | 0.62 |
| Leic | Leicester | 530,264 | 532,476 | 0.766 | 11 | 1049 | 2,212 | 0.42 |
| Edin | Edinburgh | 521,784 | 522,664 | 0.751 | 12 | 1066 | 880 | 0.17 |
| Port | Portsmouth | 488,385 | 495,029 | 0.712 | 13 | 1131 | 6,644 | 1.36 |
| Brig | Brighton | 467,937 | 473,759 | 0.681 | 14 | 1187 | 5,822 | 1.24 |
| Belf | Belfast | 441,925 | 445,064 | 0.640 | 15 | 1260 | 3,139 | 0.71 |
| Cove | Coventry | 427,678 | 429,576 | 0.618 | 16 | 1318 | 1,898 | 0.44 |
| Card | Cardiff | 390,692 | 391,786 | 0.563 | 17 | 1466 | 1,094 | 0.28 |
| Bour | Bournemouth | 386,557 | 388,680 | 0.559 | 18 | 1476 | 2,123 | 0.55 |
| Midd | Middlesbrough | 349,436 | 350,184 | 0.503 | 19 | 1651 | 748 | 0.21 |
| Sout | Southampton | 347,446 | 348,930 | 0.502 | 20 | 1657 | 1,484 | 0.43 |
| Stok | Stoke-on-Trent | 332,542 | 333,322 | 0.479 | 21 | 1742 | 780 | 0.23 |
| Hull | Hull | 322,100 | 323,068 | 0.465 | 22 | 1791 | 968 | 0.30 |
| Wake | Wakefield | 306,684 | 308,459 | 0.443 | 23 | 1890 | 1,775 | 0.58 |
| Sout | Southend-on-Sea | 280,158 | 282,474 | 0.406 | 24 | 2074 | 2,316 | 0.83 |
| Read | Reading | 274,632 | 276,174 | 0.397 | 25 | 2125 | 1,542 | 0.56 |
| Luto | Luton | 273,544 | 274,626 | 0.395 | 26 | 2144 | 1,082 | 0.40 |
| Derb | Derby | 271,170 | 271,826 | 0.391 | 27 | 2172 | 656 | 0.24 |
| Gill | Gillingham | 258,422 | 261,010 | 0.375 | 28 | 2266 | 2,588 | 1.00 |
| Plym | Plymouth | 257,281 | 258,219 | 0.371 | 29 | 2292 | 938 | 0.36 |
| Nort | Northampton | 222,991 | 225,174 | 0.324 | 30 | 2643 | 2,183 | 0.98 |
| Milt | Milton Keynes | 211,234 | 213,277 | 0.307 | 31 | 2811 | 2,043 | 0.97 |
| Walt | Walton-on-Thames | 205,663 | 207,970 | 0.299 | 32 | 2905 | 2,307 | 1.12 |
| Farn | Farnham | 202,349 | 203,378 | 0.292 | 33 | 2973 | 1,029 | 0.51 |
| Blac | Blackpool | 193,561 | 200,099 | 0.288 | 34 | 3025 | 6,538 | 3.38 |
| Norw | Norwich | 195,969 | 198,613 | 0.286 | 35 | 3049 | 2,644 | 1.35 |
| Swin | Swindon | 195,820 | 196,544 | 0.283 | 36 | 3083 | 724 | 0.37 |
| Aber | Aberdeen | 188,927 | 189,598 | 0.273 | 37 | 3215 | 671 | 0.36 |
| Pres | Preston | 183,362 | 183,766 | 0.264 | 38 | 3316 | 404 | 0.22 |
| Sund | Sunderland | 182,966 | 183,402 | 0.264 | 39 | 3324 | 436 | 0.24 |
| Pete | Peterborough | 178,184 | 181,366 | 0.261 | 40 | 3361 | 3,182 | 1.79 |
| Ipsw | Ipswich | 175,504 | 177,083 | 0.255 | 41 | 3459 | 1,579 | 0.90 |
| Oxfo | Oxford | 172,436 | 173,629 | 0.250 | 42 | 3530 | 1,193 | 0.69 |
| Slou | Slough | 167,492 | 168,099 | 0.242 | 43 | 3638 | 607 | 0.36 |
| Dund | Dundee | 159,648 | 160,798 | 0.231 | 44 | 3808 | 1,150 | 0.72 |
| Hudd | Huddersfield | 159,354 | 159,821 | 0.230 | 45 | 3832 | 467 | 0.29 |
| Warr | Warrington | 152,208 | 152,488 | 0.219 | 46 | 4030 | 280 | 0.18 |
| York | York | 150,274 | 151,032 | 0.217 | 47 | 4069 | 758 | 0.50 |
| Blac | Blackburn | 145,401 | 145,716 | 0.210 | 48 | 4235 | 315 | 0.22 |
| Camb | Cambridge | 140,937 | 142,459 | 0.205 | 49 | 4326 | 1,522 | 1.08 |
| Swan | Swansea | 141,420 | 141,871 | 0.204 | 50 | 4341 | 451 | 0.32 |
| Burn | Burnley | 140,995 | 141,632 | 0.204 | 51 | 4350 | 637 | 0.45 |
| Glou | Gloucester | 139,667 | 140,484 | 0.202 | 52 | 4389 | 817 | 0.58 |
| Telf | Telford | 137,637 | 138,298 | 0.199 | 53 | 4459 | 661 | 0.48 |
| Marg | Margate | 132,833 | 136,468 | 0.196 | 54 | 4512 | 3,635 | 2.74 |
| Colc | Colchester | 134,095 | 135,538 | 0.195 | 55 | 4548 | 1,443 | 1.08 |
| Grim | Grimsby | 128,440 | 128,757 | 0.185 | 56 | 4813 | 317 | 0.25 |
| Pole | Polegate | 124,504 | 125,610 | 0.181 | 57 | 4936 | 1,106 | 0.89 |
| Chel | Cheltenham | 119,298 | 119,808 | 0.172 | 58 | 5192 | 510 | 0.43 |
| Newp | Newport | 119,212 | 119,552 | 0.172 | 59 | 5203 | 340 | 0.29 |
| Linc | Lincoln | 116,742 | 117,039 | 0.168 | 60 | 5325 | 297 | 0.25 |
| Barn | Barnsley | 115,047 | 115,391 | 0.166 | 61 | 5405 | 344 | 0.30 |
| Torq | Torquay | 113,689 | 114,024 | 0.164 | 62 | 5476 | 335 | 0.29 |
| High | High Wycombe | 111,988 | 113,985 | 0.164 | 63 | 5477 | 1,997 | 1.78 |
| Wiga | Wigan | 112,087 | 112,560 | 0.162 | 64 | 5549 | 473 | 0.42 |
| Chel | Chelmsford | 110,371 | 111,514 | 0.160 | 65 | 5602 | 1,143 | 1.04 |
| Basi | Basingstoke | 110,509 | 111,024 | 0.160 | 66 | 5623 | 515 | 0.47 |
| Craw | Crawley | 110,089 | 110,913 | 0.159 | 67 | 5632 | 824 | 0.75 |
| Maid | Maidstone | 109,320 | 110,091 | 0.158 | 68 | 5681 | 771 | 0.71 |
| Wish | Wishaw | 109,579 | 110,082 | 0.158 | 69 | 5684 | 503 | 0.46 |
| Bedf | Bedford | 109,667 | 110,080 | 0.158 | 70 | 5686 | 413 | 0.38 |
| Exet | Exeter | 109,213 | 109,476 | 0.157 | 71 | 5715 | 263 | 0.24 |
| Ella | Elland | 108,787 | 109,104 | 0.157 | 72 | 5733 | 317 | 0.29 |
| Basi | Basildon | 106,917 | 107,927 | 0.155 | 73 | 5792 | 1,010 | 0.94 |
| Gray | Grays | 106,493 | 107,290 | 0.154 | 74 | 5829 | 797 | 0.75 |
| Nort | Northfleet | 106,024 | 106,765 | 0.154 | 75 | 5854 | 741 | 0.70 |
| Worc | Worcester | 104,338 | 105,160 | 0.151 | 76 | 5951 | 822 | 0.79 |
| Donc | Doncaster | 102,672 | 103,235 | 0.148 | 77 | 6072 | 563 | 0.55 |