| Middleton |
Full name (in Craig 2) Lancashire, Middleton |
| Middleton and Prestwich |
Full name (in Craig 3,4) Lancashire, Middleton and Prestwich |
| Mid Dunbartonshire |
|
| Midhurst |
|
| Mid Leicestershire |
|
| Midlothian |
|
| Midlothian and Peeblesshire |
|
| Midlothian and Peeblesshire Northern |
|
| Mid-Ulster |
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. |
| Milton Keynes |
|
| Milton Keynes Central |
|
| Milton Keynes North |
|
| Milton Keynes North East |
|
| Milton Keynes South |
This constituency (and its counterpart, Milton Keynes North), came into being when the two Milton Keynes constituencies (Milton Keynes North East and Milton Keynes South West) were reconfigured following the Boundary Commission's Fifth Periodic Review of Westminster constituencies |
| Milton Keynes South West |
|
| Mitcham |
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. |
| Mitcham and Morden |
|
| Mole Valley |
|
| Monaghan |
|
| Monaghan North |
|
| Monaghan South |
|
| Monklands East |
|
| Monklands West |
|
| Monmouth |
Full name (in Craig 3,4) Monmouthshire, Monmouth |
| Monmouth District of Boroughs |
|