I run 716 Music (http://716lavie.com/music/my-mixtapes-collection/)
I used to record tapes and tapes on the radio, lots of house/techno tapes but also some hip hop and reggae.
You'll find mixes by : Dee Nasty, Nick Manasseh, Lenny Dee, Liza N'Eliaz, Francesco Farfa, Dj Clyde, ...