| Ulster Mid |
Constituency first used at the February General election of 1974 (28/02/1974). Probably the same constituency as Mid-Ulster (q.v.) - difference in terminology between Craig and Times sources. |
| University of Wales |
Non-geographic constituency. |
| Unknown |
Use this as a placeholder where the constituency for a period of service is not yet known. |
| Upminster |
|
| Upper Bann |
|
| Uxbridge |
Constituency first used at the February General election of 1974 (28/02/1974). Full name (in Craig 2,3,4) Middlesex, Uxbridge. Constituency of same name reformed 1983. |
| Uxbridge |
Constituency of same name also existed 1885-1974ยน. |
| Uxbridge and South Ruislip |
|