Birmingham tops the ranking, with 219.1 km² square kilometres, ahead of Glasgow and Leeds. The full ranking is below, each entry linked to its page.

# Town County Built-up area
1 Birmingham West Midlands 219.1 km²
2 Glasgow Glasgow City 138.1 km²
3 Leeds West Yorkshire 118.9 km²
4 Sheffield South Yorkshire 113.7 km²
5 Liverpool Merseyside 109.4 km²
6 Edinburgh City of Edinburgh 101.5 km²
7 Bromley Greater London 80.3 km²
8 Coventry West Midlands 77.7 km²
9 Hillingdon Greater London 76.4 km²
10 Manchester Greater Manchester 74.8 km²
11 Leicester Leicestershire 73.7 km²
12 Bristol Bristol 72.8 km²
13 Stoke-on-Trent Staffordshire 70.5 km²
14 Croydon Greater London 68.5 km²
15 Barnet Greater London 66.1 km²
16 Kingston upon Hull East Riding of Yorkshire 65.8 km²
17 Derby Derbyshire 64.7 km²
18 Bradford West Yorkshire 63.2 km²
19 Plymouth Devon 60.8 km²
20 Northampton Northamptonshire 60.3 km²
21 Newcastle upon Tyne Tyne and Wear 60.2 km²
22 Nottingham Nottinghamshire 59.4 km²
23 Aberdeen Aberdeen City 58.2 km²
24 Wolverhampton West Midlands 57.4 km²
25 Norwich Norfolk 55.5 km²
26 Telford Shropshire 54.6 km²
27 Enfield Greater London 52.7 km²
28 Milton Keynes Buckinghamshire 51.3 km²
29 Peterborough Cambridgeshire 48.2 km²
30 Southampton Hampshire 47.7 km²
31 Warrington Cheshire 47.7 km²
32 Bexley Greater London 47.2 km²
33 Ealing Greater London 46.7 km²
34 Middlesbrough North Yorkshire 43.5 km²
35 Harrow Greater London 42.2 km²
36 Reading Berkshire 42.1 km²
37 Luton Bedfordshire 41.0 km²
38 Hounslow Greater London 40.4 km²
39 Sunderland Tyne and Wear 40.2 km²
40 Greenwich Greater London 39.5 km²
41 Poole Dorset 39.1 km²
42 Ipswich Suffolk 38.8 km²
43 Huddersfield West Yorkshire 38.6 km²
44 Bournemouth Dorset 38.4 km²
45 Redbridge Greater London 37.4 km²
46 Southend-on-Sea Essex 36.1 km²
47 Blackpool Lancashire 35.0 km²
48 Dundee Dundee City 34.7 km²
49 Oxford Oxfordshire 34.6 km²
50 Portsmouth Hampshire 34.3 km²
51 Colchester Essex 34.0 km²
52 Solihull West Midlands 32.8 km²
53 Lewisham Greater London 32.4 km²
54 Doncaster South Yorkshire 30.4 km²
55 Exeter Devon 29.9 km²
56 Gateshead Tyne and Wear 29.8 km²
57 Merton Greater London 29.8 km²
58 Basingstoke Hampshire 29.5 km²
59 Scunthorpe Lincolnshire 29.3 km²
60 Wandsworth Greater London 29.1 km²

Source: ONS Built-up Areas 2022. Compiled by Postcodes UK.

Frequently asked questions

Which is the largest town in Britain by built-up area?

Birmingham tops the list, with 219.1 km² square kilometres, followed by Glasgow and Leeds.

How is this ranking measured?

This ranking is based on ONS Built-up Areas 2022. It covers Britain's recognised built-up areas.