I was in the Beckton Tesco and stumbled across these(they are the blue coloured packs in the picture). I dont know if anyone still uses cd-r's, but at that price I thought I would share the deal. If I remember right they are upto 52 speed, 700mb or 80 mins of music.
They had a big display with loads of them on the end of an isle, so I am assuming its nationwide.
I did a search but could not find it posted already.