Too many to list, started off on Spectrum mags with a cover tape but I can't really recall which ones as I was probably 8 or 9 years old. Having a bit of a Google I think it would have been Sinclair User and Your Sinclair.
I then went console so was NES, Gameboy, Game Gear and Mega Drive for many years and all the multi formats like Gamesmaster and Mean Machines.
I recall having the first issue of Total which I thought was amazing, it covered NES and Gameboy and had Steve Jarratt and Andy Dyer featured throughout with them trading insults, it reminds me of Bottom in some ways. Andy was very much like Richie's (Rik Mayall) character, but obviously cleaner.
MM was probably my favourite in later years, the humour and art style appealed to me, I seem to remember the pages having a lovely matt finish too. I'm pretty sure this is where I first saw the Neo Geo which to a 12 year old me was the most glorious, unobtainable device to ever exist. It was almost mythical round our way. Who could possibly have £300 for a single game?!