H.J. Eysenk - Check your own IQ - ISBN 0-14-013506-5
H.J. Eysenk - Test your IQ - ISBN 0-7225-2936-8
Eamonn Butler and Madsen Pirie - Test your IQ - ISBN 0-330-26712-4
All good books for getting your mind working quickly, but are NOT similar to the initial tests (no flattened cubes etc). I believe there are books available with titles like 'Beat the aptitude test' which do have questions more similar to the initial tests - I will try to ferret out the titles.