The pass mark for the theory test is 86%, which means you need to answer 43 out of 50 multiple choice questions correctly to pass. For the hazard perception section of the test, you need to score 44 out of 75. You must pass both parts of the test to pass the overall test. If you pass, you will receive a pass certificate number at the test center, which you need when you book and take your driving test. Your pass certificate number is valid for two years, and you must pass your driving test within that time, otherwise, youll have to pass the theory test again. If you fail, youll receive a letter at the test center that tells you which parts you did not score enough points on so you know what to practice. You must book and take the full test again, even if you passed one part this time. You have to wait at least three working days before taking your test again.