Went into Currys in the White Rose Centre in Leeds at lunchtime and got Burnout Paradise and Alone in the Dark for £30. There were loads of games on all the major formats.
I know there are always deals on here for Comet and Currys saying there are cheap games and when you go they are never there, and I have been dissapointed myself when I have gone to look. However this seemed to be a national promotion as it was backed with a big printed promotional sticker in the window and the game boxes also had blue 2 for £30 stickers on them as well.
They also had a table with games for all consoles from £4.99 such as Blue Dragon and a few copies of Bioshock for £9.99, but I am not sure if this will be every store.