A borrowed car and an assumption about insurance are a bad combination. Here is what actually happens to your claim.
How many people are actually driving without checking?
More than you'd think. Research from Tempcover found around 4.5 million UK motorists drove a borrowed car in the past year without checking whether they were insured to do so. That figure doesn't come with a published sample size, so we're treating it as an industry signal rather than a precise count, but it lines up with a bigger, harder number from the Motor Insurers' Bureau: an estimated 300,000 uninsured vehicles are driven on UK roads every single day.
What does uninsured driving actually cost, in real terms?
The MIB puts the economic cost at around £1bn a year. Roadside seizures of uninsured vehicles hit nearly 160,000 last year, the highest figure in 17 years. Those aren't abstract statistics. Every one of those seizures, and every one of those 4.5 million unchecked journeys, is a potential claim where the cover position isn't what everyone assumed it was.
If I lend my car to someone and they crash it, whose insurance pays?
It depends on what your policy actually says, and this is where the assumption trips people up. Most comprehensive car insurance policies in the UK do include limited third-party cover for someone else driving with the owner's permission, but that cover is usually the bare legal minimum, not the full comprehensive protection the owner has. If the borrower caused the accident, their own claims history, or lack of one, can also affect how the claim is handled. The safest position, always, is to check with the insurer before handing over the keys, not after.
What if the other driver in my accident turns out to be uninsured?
This is where it becomes your claim, not just a theoretical risk. If you're not at fault and the other driver is uninsured, or simply drives off, your claim goes through the Motor Insurers' Bureau rather than a normal insurer-to-insurer process. That route exists precisely because uninsured driving is common enough to need its own system. It can take longer to resolve, and it's exactly the kind of claim where having clear evidence from the scene, photos, witness details, the other vehicle's registration, makes the difference between a straightforward settlement and a drawn-out one.
Our guide to what happens in the first hour after a non-fault accident covers how to gather that evidence properly, and your rights to a replacement vehicle explains what you are entitled to while the claim runs.
What should you actually do if you're lending your car, or borrowing one?
Check first. If you're lending, confirm with your insurer, in writing if you can, that the borrower is covered and to what level. If you're borrowing, don't assume the owner's policy covers you fully just because they've said "go ahead". A five-minute phone call before the journey is a lot cheaper than finding out the answer after a crash.
If you've been in an accident and you're not sure where you stand, get in touch and we'll talk it through.

About the author
David Ellison
Head of Claims, PurpleSquare Hire
David specialises in the legal and procedural side of credit hire claims. Liability, like-for-like, reasonable period, mitigation, need for hire. He helps claimants and insurers cut through the jargon to the questions that actually matter.
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