| 20616 | The Understanding of Electronics | ZX-Spectrum 48K | English |
| 11151 | The Visual Processor | ZX-Spectrum 16K | English |
| 19301 | The White Tower | ZX-Spectrum 48K | English |
| 23306 | Theory of Music Questions & Exercises | ZX-Spectrum 48K/128K | English |
| 12170 | Theory of Music to Grade 5 | ZX-Spectrum 48K | English |
| 40127 | Theory of Pythagoras | ZX-Spectrum 48K | English |
| 11029 | Thomas the Tank Engine's Fun With Words | ZX-Spectrum 48K | English |
| 23314 | Three Blind Mice | ZX-Spectrum 48K | English |
| 21703 | Time | ZX-Spectrum 48K | English |
| 12178 | Time | ZX-Spectrum 48K | English |
| 12179 | Time | ZX-Spectrum 48K | English |
| 4000081 | Time Teacher I | Timex Tx2068 | English |
| 4000082 | Time Teacher II | Timex Tx2068 | English |
| 20596 | Time Teller | ZX-Spectrum 48K | English |
| 19522 | Time Tester | ZX-Spectrum 48K | English |
| 5282 | Time Traveller | ZX-Spectrum 48K | English |
| 20597 | Time Tutor | ZX-Spectrum 48K | English |
| 40727 | Times | ZX81 16K | English |
| 9196 | Tiny Touch 'n' Go | ZX-Spectrum 48K | English |
| 15825 | Titrations | ZX-Spectrum 16K | English |