One in Seven Drivers Could Have Invalid Insurance Without Knowing It

One in seven UK drivers is carrying a car insurance policy with an out of date home address, according to new research from Aviva, and most of them have no idea their cover could be worthless the moment they need it.

The insurer surveyed 2,001 drivers and found that 15 percent do not think they need to tell their insurer when they move house. Among 18 to 24 year olds the figure is worse: more than one in three, 37 percent, believe a change of address is not something an insurer needs to know about. Given that an estimated 33 million cars are on UK roads, even a conservative reading of Aviva’s figures points to several million drivers carrying policies built on information that no longer matches reality.

This is not a paperwork technicality. Address is one of the core risk factors an insurer uses to calculate a premium and decide whether to pay a claim. Where a car is normally kept overnight affects the likelihood of theft, vandalism or accidental damage, and insurers price policies accordingly. A driver who moved from a quiet cul de sac with a driveway to a street with nightly on road parking, without telling their insurer, has changed the risk profile of their policy without the company’s knowledge. If that car is broken into or written off, the insurer can point to the mismatch between the address on file and the vehicle’s real location and use it to challenge the claim.

The Confusion Runs Far Wider Than Addresses

Aviva’s research found more than seven in ten drivers, 71 percent, are unclear about the full range of changes they are required to declare to their insurer. Address is just the most visible gap. The survey found 61 percent of drivers do not know that a change of job should be reported, 39 percent are unaware that a change in annual mileage should be reported to their insurer, 28 percent do not know that a change in how the car is used, for commuting rather than social driving for example, needs declaring, and 26 percent are unaware that changing where the car is kept overnight should be reported.

Eighteen percent of drivers do not realise they need to tell their insurer if they change car, and 16 percent are unaware that a change in who the main driver is should be declared. Naming a lower risk driver as the main user of a car when someone else actually drives it most is a form of insurance fraud known as fronting, whether the misrepresentation is deliberate or simply a failure to update the policy after circumstances change.

James Driscoll, motor claims manager at Aviva, said car insurance is based entirely on the information drivers provide, so insurers need to be told about changes as they happen. He said some changes look minor but failing to keep details current can affect cover and, in some cases, create real difficulties when a claim is made.

Who Carries the Risk Here

The imbalance is stark. Insurers hold the legal right to challenge or reduce a payout if a policy was based on inaccurate information, even where the driver made an honest mistake rather than a deliberate attempt to mislead. Yet nothing in the way policies are sold or renewed actively prompts most drivers to check their details are still correct. Aviva’s own research found 57 percent of drivers wrongly believe their insurer will automatically spot outdated information at renewal, and 81 percent believe no action is needed if nothing has obviously changed. Both assumptions are false. Insurers do not routinely cross check addresses against credit reference data or the electoral roll before a claim is made. The mismatch tends to surface only when a driver is at their most vulnerable, in the aftermath of a theft, a crash or a write off, which is precisely when a reduced or declined payout does the most damage.

A separate misconception adds another layer of risk. Almost a quarter of drivers, 24 percent, are unaware that driving without a valid MOT can invalidate insurance or affect a driver’s ability to claim. An MOT is not just a legal requirement for most vehicles over three years old, it is evidence a car meets minimum roadworthiness standards, and insurers can and do investigate whether a vehicle’s condition contributed to an incident if the MOT had lapsed.

A Small Data Entry With a Very Large Consequence

The scale of this problem grows once it is set against the wider claims process. A total loss claim, a theft claim or a serious collision claim can run into tens of thousands of pounds, covering the value of the car, damage to other vehicles or property, and in some cases legal costs and personal injury payouts. Insurers can point to a single unreported change of address as grounds to reduce a payout, delay a decision while further checks are carried out, or in the most serious cases refuse a claim outright on the basis that the policy was arranged using materially inaccurate information. The financial gap between a claim paid in full and a claim reduced or declined can run into thousands of pounds for a single driver, all traced back to a five minute update that was never made.

Younger drivers carry the most exposure. The Aviva data shows 37 percent of 18 to 24 year olds do not know an address change needs reporting, more than double the average across all age groups. This group is also statistically more likely to move home frequently in their twenties, for university, first jobs or shared rented accommodation, which multiplies the number of moments where a policy can quietly drift out of step with reality. A driver who moves twice in three years and updates their insurer only once has created two separate windows in which any claim could be challenged.

There is also a knock on effect for families who share a car or add a named driver. If the main policyholder moves and does not update the address, every named driver on that policy is exposed to the same risk, regardless of whether they themselves have done anything wrong. Parents who add a son or daughter to their own policy, or couples who share a single car and a single policy, should treat an address update as something that protects everyone named on the document, not just the person who physically moved.

What You Can Do

Checking and correcting your policy details takes a few minutes and could be the difference between a claim being paid in full and a claim being reduced, delayed or refused. Aviva’s research points to the specific gaps drivers should close.

Tell your insurer as soon as you move home, regardless of whether you think the new address carries similar risk to the old one. Where the car is parked overnight, driveway, garage, street or secure car park, directly affects the premium an insurer would have charged, so this cannot be left unreported.

Report a change of job, above all if your new role involves regular business travel, deliveries, courier work or transporting passengers for payment. Standard social, domestic and commuting cover will not extend to this use.

Update your insurer if your annual mileage changes significantly in either direction. Insurers use estimated mileage to assess how much time a car spends exposed to risk on the road.

Confirm who the main driver of the car actually is. If a child starts using the family car regularly, or a partner becomes its primary user, this needs to be reflected on the policy rather than left as it was when the policy was first taken out.

Check your MOT status before you need to make a claim, not after. You can check any UK vehicle’s MOT history free at gov.uk using the registration number, which also shows the exact expiry date.

Read your renewal documents properly rather than assuming your insurer will flag anything that has changed. Renewal is the one moment insurers expect you to actively confirm your details are accurate, not a moment when they check for you.

If you are ever unsure whether a change needs declaring, ring your insurer and ask directly. A short call is a far better outcome than discovering the gap when you are trying to make a claim. For more on keeping your cover valid, see our guide on the hidden cost of paying car insurance monthly.

Sources:

• Aviva: One in seven drivers could have out of date addresses on their insurance
• GOV.UK: Check the MOT history of a vehicle