Supermarket car park charges: the three ways a free shop can turn into a £100 bill

You pop in for milk, the queue at the self-checkout is slower than expected, and you stop for a coffee at the in-store café. Three weeks later a letter lands on the doormat demanding £100. You did nothing you would call wrong, yet a camera apparently disagrees.

That is the situation behind a recent warning from the Somerset County Gazette, which reported that shoppers at big names including Tesco, Sainsbury's and Asda can face private parking charges of around £100 for overstaying, arriving outside opening hours or parking outside marked bays. The report also draws a distinction that many drivers miss, between private charges and council-issued penalty charge notices.

This post looks at why those three triggers catch so many people out, what the law says about each, and what you can sensibly do about it.

What the report actually says

The core message is simple. Supermarket car parks are usually private land, and the companies running them can issue charges when you break the conditions displayed on the signs. The Gazette highlights three common ways drivers fall foul:

• Overstaying: staying longer than the maximum time allowed.
• Arriving outside opening hours: parking when the store, and often the car park, is closed or restricted.
• Parking outside marked bays: leaving the car on a line, over a boundary or somewhere not designated for parking.

It also stresses that these are not the same as council penalty charge notices. That distinction matters more than the headline figure, because it changes your rights, your options and the way the whole dispute works.

Fine or invoice? Why the word matters

Most people call anything with a registration number on it a "parking fine". Legally, though, there are two very different systems.

Council PCNs are issued under statutory powers, mainly the Traffic Management Act 2004 in England and Wales. They are enforced for contraventions on public roads and council car parks, with set penalty levels, a formal process, and independent adjudication at the Traffic Penalty Tribunal (or London Tribunals for London boroughs).

Private parking charges are different. The operator is not enforcing a law. It is claiming that you broke a contract (or, in some analyses, that you accepted a licence to park on specific terms) and that the charge is the agreed price of breaking those terms. The paperwork may look official, with reference numbers and warning language, but it is closer to a civil claim than a fine. Nobody can lawfully send bailiffs over an unpaid private charge without a court judgment first.

That does not make the charge toothless. If an operator pursues it and wins in court, a County Court Judgment can follow, affecting credit files and leading to enforcement. But the route to that point is long, regulated and full of places where the operator can trip up.

Why these three triggers catch people out

Overstaying

Many supermarket car parks now offer free parking for a limited period, often a couple of hours, with ANPR cameras logging when you enter and leave. The camera does not know why you were there. A long queue, a slow checkout, a stop at the pharmacy or a lunch break all count the same.

The Supreme Court has looked at this type of charge. In ParkingEye v Beavis [2015] UKSC 67, the court upheld a £85 charge for overstaying a two-hour free limit at a retail park. The judges accepted that the operator had a legitimate interest in managing the car park and that the charge, which was prominently signed, was not a penalty in the legal sense. The case is the foundation stone of the modern private parking industry, and it shows why "it was only a bit over" is rarely an automatic defence.

But Beavis did not say every charge is enforceable. It turned on clear signage and a legitimate interest, and the charge in that case was modest and well displayed. Where signs are hard to see, confusing or placed where drivers cannot read them, the picture can change.

Arriving outside opening hours

This one surprises people because the car park is physically open and nothing stops you driving in. But the signs may say parking is for customers only during specified hours, or that the site is closed overnight. Early-morning dog walkers, people cutting through to nearby shops and drivers popping in late at night all fall into this trap.

The key question is whether the terms were made clear to you before you parked. Operators rely on signs at the entrance and around the site. If the signage is missing, obscured by a hedge or bin, or contradicts itself, that can become the heart of an appeal.

Parking outside marked bays

Charges for parking outside bay markings often feel the most petty, particularly when the car park is quiet, but they are the simplest for an operator to prove: a photo of a wheel on a line is enough for a notice. Operators argue that bay discipline matters for safety, access and capacity.

Whether it is fair in a given case depends on the facts. Faded markings, snow, leaves, poor lighting, or an obviously ambiguous layout can all weaken the operator's position. Photographs taken at the time are worth far more than recollection weeks later.

The legal framework in plain terms

A few pieces of law and regulation shape how these disputes play out. I will keep to the ones I am confident about.

Protection of Freedoms Act 2012, Schedule 4. This allows an operator to pursue the registered keeper of a vehicle, not just the driver, if strict conditions are met. The notice must contain specific information, and where the operator relies on cameras alone, the notice generally has to reach the keeper within a tight window after the parking event (14 days, with the day after counting as the first). If those conditions are not met, the operator may be unable to hold the keeper liable, although it can still pursue the actual driver if it can identify them. Note that this regime applies in England and Wales, not Scotland, where keeper liability works differently.

The industry codes. Private operators who want access to DVLA keeper data must belong to an accredited trade association, either the British Parking Association (BPA) or the International Parking Community (IPC). Each has a code of practice covering signage, charge levels, grace periods and appeals. The BPA's current guidance caps standard charges at £100, with a reduced amount if paid early. The Government has also been working on a new single statutory code for private parking, with proposals including a lower cap and a grace period. Check the current status before relying on any detail, as the rules have been changing.

Independent appeals. If the operator rejects your first appeal, BPA members must give you a code to take it to POPLA (Parking on Private Land Appeals), which is free and independent. IPC members use the Independent Appeals Service instead. Both are worth knowing about, and there are existing guides on this site covering POPLA and how the two trade bodies differ.

Consumer law. The Consumer Rights Act 2015 requires terms to be fair and transparent, and notices to be prominent. This is the basis for many arguments about hidden or confusing terms.

What drivers should know and do

This is general information rather than advice on your own case, but these are the practical points that come up most often.

1. Treat the sign as the contract. Before leaving the car, check the maximum stay, opening hours and any customer-only conditions. Take a quick photo of the sign and the layout. It takes seconds and could save you a lot of time later.

2. Check how the site records you. If there is an ANPR camera at the entrance, expect your arrival and departure times to be logged automatically. Some sites require you to enter your registration at a terminal or in the store to extend your stay. Forgetting that step is a common source of charges.

3. Keep proof. Receipts, card statements and photos can show when you were genuinely in the store, helpful if you are accused of overstaying. If the delay was beyond your control, such as a breakdown, a medical emergency or a store closure, keep any evidence.

4. Do not ignore letters. A private charge is not a fine you can safely forget. Ignored notices may escalate to reminder letters, debt-recovery firms and eventually a court claim. Respond within the stated deadlines, and if you receive court papers, act on them promptly rather than hoping they go away.

5. Appeal in writing, factually. If you plan to challenge, stick to the facts: signage, markings, timing, evidence of payment or genuine reasons. Be wary of paying early out of panic if you believe the charge is invalid, but equally weigh the reduced early-payment amount if the case is weak.

6. Know who you are dealing with. Look at the notice to confirm whether it is from a private company or a council. If a council, a different appeal route applies, and our guides on council PCNs and tribunals are more relevant.

7. Be cautious with threatening language. Letters from debt collectors or "legal" departments can sound alarming, but extra fees tacked on to the original charge are often questionable. If you are unsure, consider free independent advice from a body such as Citizens Advice, or a solicitor if the amount or stakes are high.

Looking ahead

The Gazette's warning lands at a time when private parking is under heavy scrutiny. The industry issues millions of charges a year, and complaints about signage, ANPR errors and aggressive recovery tactics have kept the pressure on regulators and ministers. The Government has been developing a single code of practice that would apply across the sector, with proposed changes including a lower maximum charge and a grace period at the end of a stay. The details and timing have shifted, so it is worth checking GOV.UK for the latest position rather than assuming any specific rule is already in force.

If those reforms take full effect, drivers who overrun by a few minutes may have more protection, and operators may face stricter standards on signage and appeals. But even with a new code, the fundamentals will remain the same: private land, private terms, and a charge that depends on how clearly those terms were presented.

For now, the safest approach is also the simplest. Read the sign, photograph it if anything looks unclear, and keep your receipts. A supermarket shop should never cost more than the contents of the trolley, and a little care at the car park entrance is usually enough to keep it that way.

This article provides general information about UK parking rules and is not legal advice. If you have received a charge and are unsure what to do, consider official guidance from GOV.UK, the BPA or IPC, Citizens Advice, or a qualified professional.