Retro Computers / Consoles / Hand Helds and Games (Wick BN17)

I am looking for anything from the 1970s, 1980s and 1990s. Working or not.
Computers e.g. Commodore, Sinclair, Amstrad, Dragon, BBC, Atari. etc.
Consoles e.g. Nintendo, Sega, Atari, Sony, XBOX. etc.
Any games on Tape, Disk, Cartridge or CD.
Also Arcade machines.

I am a collector and just trying to expand on my collection.
Thank you.