Randomly browsing Facebook today I noticed someone asking if there was an .ssd of this game available. I have searched the usual places and, strangely enough, I can't find it. It's not in the FlaxCottage archive either. I have it myself somewhere on a shelf so I guess I could try and make an .ssd of the disc (no idea if it will have survived as it's a 1985 game!). Before I start, I thought I'd make a request here, see if anyone else just happens to have it to hand and can upload it.
This is its entry on Everygamegoing (obviously there's no download there):
https://www.everygamegoing.com/litem/Game-Core/38118/
Game Core (BBC Soft/BBC Publications)
Re: Game Core (BBC Soft/BBC Publications)
I also have a copy (on tape) but could archive it if required.