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Dash cams and UK law: the short version

There's no law that bans dash cams on British roads, and no law that says you must have one. What exists instead is a patchwork of rules that already apply to you as a driver: the Road Traffic Act, the Highway Code, the Data Protection Act 2018 and UK GDPR. A dash cam doesn't create new obligations so much as shine a light on ones you already had.

In practice, most of the trouble people get into has nothing to do with the camera itself. It's about where they stuck it, what they did with the footage afterwards, and whether they fiddled with it at 70mph on the M6. Get those three things right and a dash cam is one of the most useful bits of kit you can carry.

Mount it properly, or don't mount it at all

The windscreen has a swept area, and anything sitting in the driver's line of sight is a problem. Keep the camera tucked behind the rear-view mirror or high up on the passenger side, and check that it doesn't intrude on the area cleared by the wipers on your side. An MOT tester can flag obstructions in that zone, and more importantly, a police officer who thinks your view is compromised can have a word with you under careless driving rules.

• Route the cable down the A-pillar or under the headlining so it can't snag the steering wheel or your hands.
• Never position anything where a side airbag deploys — that turns a small camera into a projectile.
• Test the angle from the driver's seat, not from outside the car. You want to see your own bonnet edge, not a close-up of the sky.
• If you use a suction mount, clean the glass properly and check it in cold weather. They drop off in a frost.

Footage is personal data, and that matters

Every number plate, face and conversation you capture is personal data under UK GDPR. You don't need consent to record on a public road — you can rely on legitimate interests — but you do need to be sensible about what happens next. The Information Commissioner's Office has been clear that dash cams are fine for protecting yourself, not for building a library of strangers.

Practical steps that keep you on the right side of things:

• Tell passengers they're being recorded, especially if your camera captures audio. Recording a private conversation without people knowing is a different matter entirely.
• Turn audio off unless you genuinely need it. Most insurance disputes are settled on pictures, not sound.
• Use loop recording so old footage is overwritten automatically. A camera that wipes itself is far easier to justify than a hard drive full of last year's school run.
• Delete footage you no longer need. "Just in case" isn't a retention policy.

Never touch it while driving

This is the rule that catches people out. You must be in proper control of your vehicle at all times, and prodding a touchscreen to save a clip, review an incident or fiddle with settings is exactly the kind of behaviour that leads to a careless driving charge. The penalties can include a fine, points and, in serious cases, a court appearance.

Set everything up before you pull away. That means:

• Checking the camera is recording and the card has space before you move off.
• Knowing which button saves a clip, so you can ask a passenger to press it — or do it once you've parked safely.
• Ignoring the urge to review footage at the roadside. Pull over somewhere legal, switch off the engine and then look.

Making footage work for you after an incident

The moment a dash cam earns its keep is after a collision or a near miss. Don't rely on the loop recording to keep the clip — if you carry on driving, it'll be overwritten within hours, sometimes minutes. Save the file immediately, or remove the card and stop recording until you've copied it somewhere safe.

Keep the original file untouched. Insurers and solicitors want the raw footage with its timestamp intact, not a copy you've trimmed and brightened. Note the date, time and location alongside it. If you're reporting an incident to the police, mention that you have footage when you make contact — they'll tell you how to submit it, and it's far more useful to them early than three weeks later.

Some insurers ask about dash cams when you take out a policy, and a few offer a modest discount. Even where there's no discount, having footage can shortcut a disputed claim enormously — particularly in a rear-end shunt or a roundabout disagreement where it's your word against theirs.

Sharing clips online: think before you post

It's tempting to upload a spectacular bit of bad driving. Be careful. Publishing someone's number plate alongside an accusation can land you in trouble for harassment or defamation, and it also weakens your position if the matter goes to court.

• Blur or obscure number plates and faces before posting anywhere public.
• Report bad driving to the police rather than conducting a trial on social media.
• Remember that anything you post can be found by the other party's insurer.
• Don't upload footage of an active claim until it's resolved and you've taken advice.

Treat your dash cam as a witness, not a weapon. Keep it mounted sensibly, leave it alone while you're moving, store footage only as long as you need it, and it'll quietly do its job — which is to back you up on the day something goes wrong.