- Meeting room, Friends of the Earth Warehouse
- 54-57 Allison Street, Birmingham, B5 5TH
- Memorial
- Norfolk Gardens, Bradford
- Menwith Hill
- Menwith Hill, Harrogate, HG3 2RL
- Merseyside CND
- 151 Dale Street, Liverpool, L2 2AH
- Methodist Central Hall
- Storey's Gate, London, SW1H 9NH
- Methodist Church Rooms
- 10A Bishops Street, Leicester
- Michaelson Road Bridge
- Michaelson Road Bridge, Barrow-in-Furness, LA14 1FD
- Mill Hill Unitarian Chapel
- City Square, Leeds, LS1 5EB
- Millbank
- Millbank, London
- Millennium Footbridge
- Millennium Footbridge, Lancaster, LA1 1AY