I am in the process of writing questions answers for the AQA GCSE Questions.
You can see how much progress I have made by clicking on the link.
You can download the the document if what I have done so far is useful to you.
IGCSE Physics, IGCSE Chemistry, AQA GCSE Physics and AQA Combined Science (Physics) are all done. All are available as digital downloads for £2.49 each.