What happens if I fail one of the three qualifying tests?

You have unlimited attempts on the part one test but a maximum of three attempts on the part two and three tests. If you fail an attempt then you can re book a test. If you fail the third attempt on the part 2 or 3 tests then you cannot proceed further and you will have to re register and start the entire process again. You will have to wait a full two years from the date you passed your part one test before you can start again. The following link shows details of the qualifying process.https://www.gov.uk/browse/driving/teaching-people-to-drive