Local governments
M
| Name | Type | Notes |
|---|---|---|
| Mid Glamorgan County Council | County Council | |
| Midlothian Council | Unitary Authority | Created in 1996 during local government reorganisation |
| Midlothian County Council | County Council | |
| Midsomer Norton UDC | District Council | |
| Mid-Sussex District Council | District Council | |
| Milton Keynes Borough Council | Borough Council | |
| Mole Valley DC | District Council | |
| Monaghan County Council | County Council | |
| Monmouthshire County Council | County Council | |
| Montgomeryshire County Council | County Council | |
| Moray Council | Unitary Authority | |
| Morley Borough Council | Borough Council | |
| Morton Parish Council | Town, Parish or Community Council | |
| Motherwell Burgh Council | Borough Council | |
| Mottram UDC | District Council | |
| Mountain Ash UDC | District Council | |
| Mullingar Town Commissioners | Borough Council | |
| Murrayfield and Crammond | District Council | |
| Mussleburgh Burgh Council | Borough Council | |
| Mynyddislwyn Urban District Council | District Council |