Found this PSP game in Sainsbury's Chelmsford, marked with an "Entertainment Blitz £2" sticker in the regular PSP game rack. Not played it yet but for £2 it can't be bad. They only had the one so I don't know if it might be available in other stores. I scanned it at the self-service checkout and was half expecting a problem but £2 indeed it was. Might be worth a look if you're there anyway.