wow that must be hard! I'm on edexcel for maths and OCR for the other two but I'm sure I can think of some other stuff to help, have you used exam solutions for maths?
Posted from TSR Mobile
well http://www.examsolutions.net has video solutions for all the maths past papers if you don't know why you got a question wrong. I use the CGP revision guides too, one of the things I'm currently doing is going through each spread and answering the 'exam questions' box at the bottom of the page, that can have some obscure stuff in and since there's one for each little topic it should cover everything. Copying from the markschemes is always good though because then you know the exact wording to use and stuff. Also http://www.hodderplus.co.uk/myrevisionnotes/ has loads of quizzes on but not for your exam board, could still be useful though
that sounds like a really good method! but im using the 2003 edition for the cgp guide heard that theres a change of syllabus so i can really rely on it plus i dont have that much time fingers crossed i have to secure an ABB ! S: