| 38767 | Midland Peak Fleet Manager | ZX-Spectrum 48K | English |
| 9953 | Midrail | ZX-Spectrum 48K | English |
| 36737 | Midway | ZX81 16K | Portuguese |
| 16180 | Mision Submarina | ZX-Spectrum 48K | Spanish |
| 27738 | Mixxil | ZX-Spectrum 48K | Italian |
| 27451 | Model Railway Timetable Software | ZX-Spectrum 128K | English |
| 12564 | Modern Day Locospotter | ZX-Spectrum 48K | English |
| 8761 | Modern Talking | ZX-Spectrum 48K | Polish |
| 43624 | Money | ZX81 16K | English |
| 19126 | Monster Wrestling | ZX-Spectrum 16K | English |
| 31115 | Monty Python's Argument Clinic | ZX-Spectrum 48K | English |
| 24383 | Moonfall | ZX-Spectrum 48K | English |
| 19116 | Moonlander | ZX-Spectrum 16K | English |
| 29110 | Moonlander | ZX81 16K | English |
| 3309 | Mr. Grumpy | ZX-Spectrum 48K | English |
| 42384 | Mult | ZX-Spectrum 16K/48K | English |
| 14647 | Multiple Choice | ZX-Spectrum 48K | Dutch |
| 3482 | Nautilus | ZX-Spectrum 48K | Multi-language: English, Hungarian |
| 36188 | Nebula II | Sinclair QL | - |
| 14049 | Network Exeter | ZX-Spectrum 48K | English |