| Lagan Valley |
|
| Lambeth |
|
| Lambeth Brixton |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Lambeth Central |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Lambeth Kennington |
|
| Lambeth North |
|
| Lambeth Norwood |
|
| Lambeth Streatham |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Lambeth Vauxhall |
|
| Lanark |
Full name (in Craig 3,4) Lanarkshire, Lanark |
| Lanark and Hamilton East |
|
| Lanarkshire |
|
| Lanarkshire Mid |
|
| Lanarkshire North |
|
| Lanarkshire North Eastern |
|
| Lanarkshire Northern |
Constituency of same name also existed 1868-1885. |
| Lanarkshire Northern |
Constituency of same name also existed 1918-1950. |
| Lanarkshire North Western |
|
| Lanarkshire Southern |
|
| Lancashire North Eastern |
|
| Lancashire Northern |
|
| Lancashire South Eastern |
|
| Lancashire Southern |
|
| Lancashire South Western |
|
| Lancashire West |
|