| 2000842 | Introduction to Computer Programming for Information Services: TIMEX-SINCLAIR 1000/1500 | - | English |
| 2000198 | Introduction to Computer Programming: BASIC for Beginners | - | English |
| 2000199 | Introduction to Computing | - | English |
| 19802 | Introduction to Economics | ZX-Spectrum 48K | English |
| 2000882 | Introduction to FORTH | - | English |
| 2000608 | Introduction to PASCAL Including UCSD PASCAL | - | English |
| 2000206 | Introduction to Simulation Techniques on the Sinclair QL | Sinclair QL | English |
| 2000207 | Introduction to Superbasic on the Sinclair QL | Sinclair QL | English |
| 20280 | Introduction to Trigonometry | ZX-Spectrum 48K | English |
| 10997 | Introduction to Trigonometry | ZX-Spectrum 48K | English |
| 2000959 | Introduction to Word Processing | - | English |
| 2001425 | Introduction to the Z80 Microcomputer | - | English |
| 18428 | Intruder | ZX-Spectrum 16K | English |
| 6488 | Intruder Alert | ZX-Spectrum 48K | English |
| 17392 | Intruder Alert + Invaders from Planet X | ZX-Spectrum 48K | English |
| 43882 | Intruders | ZX-Spectrum 16K | English |
| 35830 | InvAGDers | ZX-Spectrum 48K | English |
| 24151 | Invadas | ZX-Spectrum 48K | English |
| 25144 | Invadas + Bomber | ZX-Spectrum 48K | English |
| 30913 | Invade-o-Trons From Planet Q | - | English |