48k Spectrum (from new)
Sega Master System (2nd hand, but while still current); sold it
Sega Megadrive (2nd hand, but while still current): sold it
Amiga 500 (from new)
Atari Lynx (2nd hand, but while still current); sold it
Sony Playstation (from new); sold it
And in recent years:
6 or more? A1200s
2 A4000s (one given free)
4 or 5 A500s
1 Acorn A3000 (given free)
1 Sinclair QL (given free)
2 Spectrum 48k, one in alternative case
Spectrum +3
2 or 3 Amiga 600s
Dell Latitude laptop PII 400MHz
IBM Netvista (given free), p4 1.8GHz
Atari Lynx II x 2
Nintendo N64, mint in box, just for the hell of it because it was only 5 pounds
possibly more that I've forgotten...?
Need to start ebaying furiously!