| lign = center valign = bottom|Rank | align = center valign = bottom|Name | align = center valign = bottom|Area |
| lign = center|1 | align = left|England
- South West
- East
- South East
- East Midlands
- Yorkshire and the Humber
- North West
- West Midlands
- North East
- Greater London
Total | align = right|
23,829 km
19,120 km
19,096 km
15,627 km
15,420 km
14,165 km
13,004 km
8,592 km
1,580 km
130,395 km |
| lign = center|2 | align = left|Scotland | align = right|78,313 km |
| lign = center|3 | align = left|Wales | align = right|20,754 km |
| lign = center|4 | align = left|Northern Ireland | align = right|13,843 km |
| lign = center| | align = left|United Kingdom | align = right|244,101 km |