I was 'Compware' during that period and as a hobby/sideline business wrote and sold QL software, resold software and hardware, and probably saw you at the early computer shows in London or Cambridge. I was friends with Futura Software (Paul) and Computer One (another Paul), and met Tony Tebby among others. Happy memories.
3D Slime rings a bell - why wouldn't it - though I can't claim to remember playing it.