My son has done a number of practice papers, including the Letts ones. The exams he will be setting are prepared by GL Assessment, and they have their own practice papers. I know they did have an association with Letts, and I'm wondering whether their papers are the exact same as Letts (ie identical word-for-word), or different. I did contact GL but they were unable to tell me whether they were the same as they hadn't seen Letts papers recently. Can anybody help - I want to avoid buying papers that are identical to those we already have. Thanks.