| Islington East (1885 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Islington South West (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Kensington North (1885 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Kensington South (1885 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| King's Lynn (1832 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). Full name (in Craig 3,4) Norfolk, King's Lynn. Known as Lynn Regis prior to 1832. |
| Kingston upon Hull North (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). Constituency of same name (a.k.a. Hull North) reformed in 1983. |
| Kirkcaldy District of Burghs (1832 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). Named Kirkcaldy Burghs in Craig 4 |
| Lambeth Brixton (1885 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Leicester North East (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Leicester North West (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Leicester South East (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Leicester South West (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Lewisham North (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Lewisham South (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Liverpool, Exchange (1885 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Liverpool, Scotland (1885 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Luton (1885 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). Full name (in Craig 2,3) Bedfordshire, Luton |
| Manchester, Cheetham (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Manchester, Exchange (1918 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Merionethshire (1832 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Merton and Morden (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Middlesbrough East (1918 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Middlesbrough West (1918 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Mid-Ulster (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). Probably the same constituency as Ulster Mid (q.v.) - difference in terminology between Craig and Times sources. |
| Mitcham (1918 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). Full name (in Craig 3) Surrey, Mitcham. Craig (3) 188 from 1945 revision. |