I used the English literature ones a lot for quotes and themes.
Hope it helps, .
Thanks for letting me know what books did you use them for and what did you end up getting in your GCSE if you don't mind me asking appreciate it
Chemistry- Same as biology. I got an 8.
Physics- CPG revision guide and some practice questions. Got a 6. I wished I would’ve gotten the AQA GCSE physics revision guide by oxford as some of my classmates used it and got higher grades.
English Lit- CPG revision guides. I got a 6. The books had the bare minimum to pass.
English Lang- CPG revision guides. I got a 6. Not very helpful. I think the key thing to do for Eng Lang is to do practice papers and have your teacher mark them.
So overall CPG revision guides would get you a 5 or 6. I started my a levels this year and I will not be using the CPG revision guides.
Have a look at your exam boards book recommendations for your course as they have to approved by the exam board in order to go on their website whereas CPG revision guides don’t have to be approved by the exam board.