- Mill Hill Unitarian Chapel
- City Square, Leeds, LS1 5EB
- Millbank
- Millbank, London
- Millennium Footbridge
- Millennium Footbridge, Lancaster, LA1 1AY
- Millennium Square
- Millennium Square, Leeds, LS2 3AD
- Ministry of Defence
- Whitehall, London, SW1A 2HB
- Mordechai Vanunu House
- 162 Holloway Road, London, Islington, N7 8DQ
- Morlan
- Queens Road, Aberystwyth, SY23 2HH
- Mostyn Street
- Mostyn Street, Llandudno
- Mound Place
- Mound Place, Edinburgh, EH1 2LX
- Museum of Liverpool
- Pier Head, Liverpool, 1DP