I have a complete GCSE standard physics book which I am not longer using as I started A levels this year. I used it and it got me an A when I predicted myself a B, it's about an inch thick and very comprehensive.
I have have two revision books for core and additional science, these are less comprehensive and don't cover the whole course.
I'd be happy to sell either or all of them two you very cheaply (over eBay so we're both protected from fraud).