| 2000997 | Brain Teasers for the Spectrum 48K | - | English |
| 2001231 | Brainteasers | - | English |
| 2000056 | Build Your Own Expert System | - | English |
| 2001388 | Build Your Own Z80 Computer | - | English |
| 2001387 | Bumper Book of Programs for the Sinclair ZX Spectrum | - | English |
| 2000057 | Business Programming on Your Spectrum | - | English |
| 2000058 | Byteing Deeper into Your ZX81 | - | English |
| 2001091 | C Language | - | English |
| 2000059 | C for Beginners | - | English |
| 2000907 | C-Puzzlebuch | - | German |
| 2001461 | CP/M Operating System | - | English |
| 2000904 | Calculating with QL Abacus | Sinclair QL | English |
| 2000002 | Cambridge Colour Collection | - | English |
| 2001345 | Carte de Reference ZX Spectrum | - | French |
| 2000781 | Chips, Sensoren, Computer | - | German |
| 2000754 | Choosing and Using Your Home Computer | - | English |
| 2001378 | Circuitos Sinclair "Inclui TK90X" | - | Portuguese |
| 2001379 | Circuitos de Micros | - | Portuguese |
| 2000697 | Codigo Maquina del ZX-Spectrum | - | Spanish |
| 2001473 | Coleção de Programas Vol. I | - | Portuguese |