I used get a head for the sky for my assessment, and can’t recommend it enough for people who are attending a CTC assessment. The Maths assistance is what I found really useful for Phase 2; the questions really do prepare you for the test CTC give you.....and I felt that having not studied arithmetic since school it was a perfect way to scratch up my skills, which resulted in a clear pass of my Math’s section. I would also recommend the pilapt-prep software, very useful for the computer capacity test – you can’t practice this enough! For stage 3, this book gives helpful tips on the interview preparation and group exercises, giving good examples and tips which helped me through the day with far more confidence. Well worth the money when you consider the cost of the assessment and that you only get one shot at it, unless you get re-invited back!