Machine Studios
- Founded
- 2014
- Country
- United Kingdom
Macsen Software
- Founded
- 1983
- Games in the catalogue
- 1
Mad Fellows
- Based in
- Leamington Spa
- Founded
- 2013
Magnetic Fields
- Based in
- Chester
- Founded
- 1982
Majestic Studios
- Games in the catalogue
- 1
- Country
- United Kingdom
Major Developments
- Games in the catalogue
- 1
- Country
- United Kingdom
Marmalade Game Studio
- Based in
- London
- Founded
- 2016
Martech Games
- Based in
- Pevensey
- Founded
- 1982
Mastertronic
- Based in
- London
- Founded
- 1983
MDickie Limited
- Games in the catalogue
- 15
- Country
- United Kingdom
Medallion Games
- Based in
- London
- Founded
- 10 February 2020
Media Molecule
- Based in
- Guildford
- Founded
- 4 January 2006
Mediatonic
- Based in
- London
- Founded
- September 2005
Mere Mortals
- Based in
- Newcastle upon Tyne
- Founded
- 1999
Messenger2050 Technologies
- Founded
- 2008
- Type
- software company, animation studio, film production company, video game developer
- Country
- United Kingdom
Micro Status
- Country
- United Kingdom
Microdeal
- Based in
- St Austell
- Games in the catalogue
- 6
MicroProse-Spectrum HoloByte UK-Europe
- Country
- United Kingdom
MicroStyle
- Type
- video game developer, division
- Country
- United Kingdom
Midas Interactive Entertainment
- Founded
- 1998
- Games in the catalogue
- 2
Midoki
- Based in
- Coventry
- Founded
- 14 December 2011
Midway Studios – Newcastle
- Based in
- Gateshead
- Founded
- 1996
Mikro-Gen
- Based in
- Bracknell
- Founded
- 1981
Milky Tea
- Games in the catalogue
- 2
- Country
- United Kingdom
Mind Candy
- Based in
- Shoreditch
- Founded
- 2003
Mind's Eye Productions
- Based in
- United Kingdom
- Founded
- 1995
Mindscape International
- Based in
- Sussex
- Founded
- 1986
Mirrorsoft
- Based in
- London
- Founded
- 1982
Mission Ctrl Studios
- Games in the catalogue
- 1
- Country
- United Kingdom
Mode 7
- Based in
- Oxford
- Founded
- 2005
Mosaic Publishing
- Based in
- London
- Founded
- 1983
Mr Chip Software
- Founded
- 1982
- Games in the catalogue
- 2
My Owl Software
- Games in the catalogue
- 2
- Country
- United Kingdom
Mythos Games
- Based in
- Harlow
- Founded
- 1988
Mytopia
- Based in
- Palo Alto
- Founded
- 2006