Longman Practice Exam Papers: A-level Pure Maths and Mechanics by Cyril Moss
Longman Practice Exam Papers offer lots of help in preparing and practising for either the mock or the actual exams. Written by experienced Examiners, they give you the opportunity to practise the sort of questions that appear, so that when you sit your exams, you will be better equipped to tackle them successfully. You'll also be able to identify areas of difficulty, so that you know where to concentrate your revision.