Hi, I am an approved trainer for the BOHS P402.
A little advice. BOHS require the submission of 2 surveys within 3 months of receiving the letter advising you of a pass to the Exam and Assessment.
You could survey your own house and one of your friends houses. You really need to find asbestos for the reports so look for houses build pre-2000, paying particular attention to garden buildings, garages etc.
HSG 246 provides a detailed list of what a survey should include. If you have any problems, search BIACS asbestos from any web browser. They will help.
Regarding the Exam, easy if you pay attention to the course. 40 short answer questions, 4 points per question, you need 50% to pass and you have 2 hours to do it in.
Good luck