| Haringey Hornsey (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Haringey Tottenham (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Haringey Wood Green (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Harlow (1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Hartlepool (1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Havant and Waterloo (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Havering Hornchurch (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Havering Upminster (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Hazel Grove (1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Hertford and Stevenage (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Hertfordshire South (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Hillingdon Hayes and Harlington (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Hillingdon Ruislip Northwood (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Hillingdon Uxbridge (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Horsham and Crawley (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Hounslow Brentford and Isleworth (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Hounslow Feltham and Heston (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Islington Central (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Islington South and Finsbury (1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Kensington and Chelsea Chelsea (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Kensington and Chelsea Kensington (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Kingston upon Hull Central (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). Constituency of same name also existed 1885-1955. |
| Kingston upon Thames Surbiton (1974 - 1983) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Kingswood (1974 - 2024) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Kirkcaldy (1974 - 2005) |
Constituency first used at the February General election of 1974 (28/02/1974). |