A while ago I posted a clip with audio of The Beat's Ranking Roger toasting over Rock the Casbah from The Clash.
Ranking Roger came across the clip on Youtube in 2010 and commented on it, saying "Nice to see this cut up here. I recorded this for the Clash in London around 82-3 when the clash and the beat toured quite a bit in the U.S.A together.
"I also did a toast/rap over red angel dragnet which i have not heard since. I did it as a one take in the studio.The Clash split up shortly afterwards so it was never released. What you guys are hearing here was just a rough mix for us to go away and listen too. it was never finished."
The Youtube user who posted that Casbah version back in 2008 and has recently found the audio of the Red Angel Dragnet that Roger mentions, and posted it, go have a listen...