I have a collection of books in good condition, suitable for CEM style eleven plus exams. They include books from CGP and elevenplusexams authors and cover all topics including NVR, Verbal Reasoning, Cloze, Maths and English Comprehension.
I also have books from the Bond, Walsh, Susan Daughtery and other authors, which though not specifically for CEM are very useful to practise NVR, VR, Comprehension and Maths.
If you are interested please let me know. Would need to be collected from Thame.