England

Constituency
Middlesbrough and Thornaby East (2024)
Middlesbrough East (1918 - 1974)
Middlesbrough South and Cleveland East (1997)
Middlesbrough West (1918 - 1974)
Middlesex (1832 - 1885)
Middleton (1885 - 1918)
Middleton and Prestwich (1918 - 1983)
Midhurst (1832 - 1885)
Mid Leicestershire (2024)
Milton Keynes (1983 - 1992)
Milton Keynes Central (2024)
Milton Keynes North (2010)
Milton Keynes North East (1992 - 2010)
Milton Keynes South (2010 - 2024)
Milton Keynes South West (1992 - 2010)
Mitcham (1918 - 1974)
Mitcham and Morden (1983)
Mole Valley (1983 - 2024)
Morecambe and Lonsdale (1950 - 1983)
Morecambe and Lunesdale (1983)
Morley (1885 - 1918)
Morley and Outwood (2010 - 2024)
Morley and Rothwell (1997 - 2010)
Morpeth (1832 - 1983)
Mossley (1918 - 1950)