The theory test has two parts, and you must pass both in the same sitting: 50 multiple-choice questions (pass mark 43) and a hazard-perception video section (pass mark 44 out of 75). Get one part right and fail the other, and the whole test is a fail - you sit both again. It catches more people out than they expect, and almost always on the hazard clips rather than the questions.
Here are the exact numbers first, then how each part actually works and how to prepare so you pass first time.
Theory test quick facts
| Part | What it is | Questions / clips | Time | Pass mark |
|---|---|---|---|---|
| Multiple choice | On-screen questions about the Highway Code, rules and safety | 50 questions | 57 minutes | 43 out of 50 |
| Hazard perception | Video clips where you click as hazards develop | 14 clips, 15 scorable hazards | Runs with the clips | 44 out of 75 |
The fee is GBP 23, and you book it in one place only: gov.uk. The certificate you get for passing is valid for two years.
Part one: the multiple-choice questions
You get 50 questions drawn from the official DVSA bank, and you need 43 correct in 57 minutes. That is a generous amount of time - most people finish with plenty to spare - so there is no need to rush.
The questions cover the Highway Code, road signs, stopping distances, vehicle safety, priorities at junctions, and how to react to other road users. Some come as a short case study: you read a scenario and answer a few linked questions about it. You can flag questions and come back to them, so do a confident first pass and revisit anything you are unsure of.
This is the part most learners find manageable, especially if they have revised properly. The trap is treating it as the whole test. It is not even half the battle.
Part two: hazard perception (where most people slip)
This is the section that fails confident learners. You watch 14 video clips filmed from a driver’s point of view. Thirteen clips contain one developing hazard; one clip contains two. That is 15 scorable hazards in total, and each is worth up to 5 points, for a maximum of 75. You need 44.
A “developing hazard” is something that would make you slow down, change direction or stop - a car pulling out, a pedestrian stepping off a kerb, a cyclist wobbling into your path. You click the mouse as soon as you see the hazard begin to develop. The earlier you spot a genuine developing hazard, the more of those 5 points you score.
How the scoring actually works
The system watches when you click across a scoring window. Click as the hazard first develops and you get the full 5; click later and the score drops to 4, 3, 2, 1; click after the window closes and you score 0 for that hazard. So the skill is spotting things early and clicking once, cleanly, the moment they start to develop.
The one thing that scores you zero
You cannot game it by clicking constantly. If you click in a steady rhythm or spam the mouse to try to catch every hazard, the software detects the pattern and gives you 0 for that entire clip. This is the single most common way prepared-feeling learners fail: they panic, click like mad, and score nothing on clips they would otherwise have passed. Watch the road, click when you genuinely see a hazard develop, and add maybe one confirming click - never a barrage.
The two-year certificate trap
Your theory pass certificate lasts two years. You must pass your practical test before it expires. If it runs out first, the pass is gone and you sit the whole theory test again - fee and all - before you can take a practical.
This matters more than it used to, because practical-test waiting times in London can run to several months. Passing your theory the moment you are ready, then booking your practical without long gaps, keeps you well inside the two years. If you are weighing up when to start, our guide to how many driving lessons you actually need helps you plan the practical side around your theory pass.
How to revise (what actually works)
There is no shortcut, but there is an efficient way:
- Use the official DVSA question bank. The questions in the test are drawn from it, so revising the real bank - through the official DVSA app or the “Theory Test Kit” style question sets - is the most direct preparation there is.
- Read the Highway Code properly, not just the signs. The questions test the why: why a stopping distance doubles in the wet, why certain road users get priority. Understanding the reasons means you can answer questions you have never seen before, and it makes you a safer driver.
- Practise hazard clips little and often. Ten minutes a day over a couple of weeks beats one long cramming session. You are training your eyes to spot developing hazards early, and that only comes with reps.
- Do full mock tests under timed conditions. Sit the 50 questions in one go with the clock running, then a full set of clips, so test day feels like a rerun of something you have already done.
- Learn the concept, not the answer. Memorising which option is “C” falls apart the moment the wording changes. Understanding the rule does not.
Resits: no cap, but a short wait
If you do not pass, there is no limit on how many times you can retake the theory test. You just have to wait at least 3 working days between attempts, and pay the GBP 23 fee again each time. So a fail is a setback, not a dead end - but each resit costs money and time, which is why first-time preparation is worth doing properly.
Booking: gov.uk only, and beware copycat sites
Book on gov.uk and nowhere else. Search results and ads are full of copycat booking sites that look official and charge you an extra “admin” fee to do exactly what gov.uk does for the standard GBP 23. They are not scams in the criminal sense, but you are paying more for nothing. If a site charges above GBP 23, or is not on the gov.uk domain, close the tab. The same caution applies to your practical - see our 2026 booking-rules guide for how DVSA is tightening who can book and change tests.
Taking an English-only test when English is not your first language
Here is a fact that catches a lot of London learners out: the theory test is in English or Welsh only. DVSA withdrew all foreign-language voiceovers and on-screen translations, and removed interpreters from both the theory and practical tests, back in April 2014 after a fraud investigation. The only interpreter exception now is British Sign Language for deaf candidates. There is no Cantonese or Mandarin option, and you cannot bring an interpreter.
That does not have to be a barrier - it just changes how you prepare. The concepts are the hard part; the English is a layer on top. Learning with an instructor who can explain the Highway Code, hazard perception and the reasoning in Cantonese or Mandarin first, then bridge you to the exact English terms you will meet on screen, means you understand the idea properly and only have to attach English labels to things you already know. We teach the theory alongside your practical lessons for exactly this reason, so the two reinforce each other. If learning in your first language would help, that is what our Chinese-speaking lessons are built for.
Quick answers
What are the theory test pass marks? 43 out of 50 on the multiple-choice section, and 44 out of 75 on hazard perception. You must pass both in the same sitting.
How does hazard perception scoring work? Each developing hazard is worth up to 5 points depending on how early you click - full marks for spotting it as it starts, fewer points the later you click, and zero if you miss the window. Clicking in a rhythm or spamming the mouse scores zero for that clip.
How much is the theory test and where do I book it? It costs GBP 23 and you book it on gov.uk only. Avoid copycat sites that charge more to do the same thing.
How long is my theory certificate valid? Two years. You must pass your practical test before it expires, or you retake the theory in full.
Can I take the theory test in Cantonese or Mandarin? No. It is English or Welsh only, with no interpreter allowed. A Cantonese- or Mandarin-speaking instructor helps you understand the concepts in your language first, then bridges you to the English used in the test.
How many times can I retake the theory test? As many as you need. You wait at least 3 working days between attempts and pay the GBP 23 fee each time.
Passing the theory is about understanding, not memorising - and it is the part we weave into lessons from early on. If the English-only test worries you, or hazard perception is where you keep slipping, that is exactly the kind of thing a patient instructor sorts out. Talk to us about lessons whenever you are ready.