In my local Asda today PS3 40gig reduced from £297 to £199. At the till they said they are selling them off as they are discontinued. 80 gig are not going to be reduced. May only be local (Stratford upon Avon) but worth a look in case it is national.
SONY PS3 40/80GB CONSOLE £200.00 INSTORE ONLY I have also heard that W H Smiths are doing these deals to but you will need to check your local store as some have them and some don't in store only.