| Wandsworth Streatham (1918 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Wanstead and Woodford (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). Constituency of same name reformed 1983. |
| Wednesbury (1832 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Wembley North (1918 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Wembley South (1918 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| West Bromwich (1885 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| West Ham North (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). Constituency of same name also existed 1885-1918. |
| West Ham South (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). Constituency of same name also existed 1885-1918 |
| West Stirlingshire (1950 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). Full name (in Craig 4) Stirlingshire and Clackmannanshire, West Stirlingshire |
| Willesden East (1918 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Willesden West (1918 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Windsor (1832 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). Full name (in Craig 3,4) Berkshire, Windsor. Constituency of same name reformed 1997. |
| Woodford (1918 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Wood Green (1918 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). Full name (in Craig 3) Middlesex, Wood Green |
| Woolwich East (1918 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |
| Woolwich West (1918 - 1974) |
Constituency first used at the February General election of 1974 (28/02/1974). |