I've come across a workbook I put together for the AQA A Specification GCSE unit on Christian Ethics. I no longer teach the A spec (and to be honest I completely forgot that I'd made the workbook), but somebody out there might it useful.
Looking through the workbook, it's mostly made up of candidate sample answers for peer assessment, plus some past paper questions and a set of key facts to learn.
There also a revision checklist for four of the six topics in the GCSE (I might have put it together for mocks rather than the final exams), which might also be of some use.
You can download the checklist here and the workbook here via google docs.
I am, of course, still hunting for the Year 12 revision booklet I was actually looking for when I found them...