WORK IN PROGRESS...
}| Rank | County | km2 |
|---|---|---|
| 1 | Portsmouth | 4,668 |
| 2 | Greater London | 4,542 |
| 3 | Slough | 4,410 |
| 4 | Southampton | 4,350 |
| 5 | Luton | 4,288 |
| 5 | Liverpool | 3,951 |
| 6 | Leicester | 3,835 |
| 7 | Southend-on-Sea | 3,816 |
| 7 | Manchester | 3,740 |
| 8 | Reading | 3,578 |
| 9 | Nottingham | 3,560 |
| 10 | Bournemouth | 3,553 |
| 11 | Bristol | 3,460 |
| 12 | Hull | 3,431 |
| 13 | Brighton and Hove | 3,022 |
| 14 | Plymouth | 3,008 |
| 15 | West Midlands | 2,843 |
| 16 | Derby | 2,843 |
| 17 | Stoke-on-Trent | 2,588 |
| 18 | Middlesbrough | 2,497 |
| 18 | South Tyneside | 2,355 |
| 18 | Newcastle-upon-Tyne | 2,350 |
| 18 | North Tyneside | 2,316 |
| 19 | Stockport | 2,241 |
| 19 | Salford | 2,228 |
| 19 | Poole | 2,128 |
| 20 | Merseyside | 2,079 |
| 21 | Torbay | 2,059 |
| 21 | Sunderland | 2,059 |
| 5 | Wirral | 1,998 |
| 19 | Trafford | 1,997 |
| 23 | Greater Manchester | 1,930 |
| 21 | Bolton | 1,887 |
| 5 | Sefton | 1,839 |
| 21 | Bury | 1,828 |
| 5 | Knowsley | 1,737 |
| 21 | Wigan | 1,615 |
| 24 | Halton | 1,598 |
| 21 | Oldham | 1,532 |
| 34 | Sheffield | 1,393 |
| 24 | Gateshead | 1,342 |
| 21 | Rochdale | 1,307 |
| 24 | Bradford | 1,304 |
| 25 | Medway | 1,299 |
| 24 | Leeds | 1,296 |
| 5 | St Helens | 4,288 |
| 26 | Warrington | 1,086 |
| 28 | Bracknell Forest | 1,005 |
| 24 | Kirklees | 958 |
| 29 | Hartlepool | 943 |
| 24 | Wakefield | 940 |
| 34 | Rotherham | 878 |
| 30 | Stockton-on-Tees | 875 |
| 31 | Thurrock | 872 |
| 32 | Wokingham | 839 |
| 33 | North East Lincolnshire | 823 |
| 34 | Barnsley | 669 |
| 34 | Calderdale | 531 |
| 34 | Doncaster | 508 |