Genuine Customer Defence: Fighting a Supermarket Car Park Ticket
18 May 2026
Receiving a parking ticket at a supermarket or retail park where you were actually shopping feels deeply unjust — and legally, you may have a strong case. The "genuine customer" defence draws directly from Supreme Court authority and challenges whether the parking charge serves its stated purpose.
## The legal basis: Beavis and legitimate interest
In ParkingEye v Beavis [2015] UKSC 67, the Supreme Court held that parking charges are enforceable because they serve a "legitimate interest" — specifically, managing the car park for the benefit of the landowner's customers.
But this cuts both ways. If the parking scheme exists to serve customers, then penalising a genuine customer undermines that very purpose. The charge ceases to serve a legitimate interest when it punishes the people it's supposed to protect.
## What counts as a "genuine customer"
You are a genuine customer if you were at the site to use the facilities that the car park serves. This typically means:
- Shopping at the supermarket or retail units
- Eating at an on-site restaurant or cafe
- Using on-site services (pharmacy, optician, bank)
- Visiting multiple stores in a retail park
The key question is whether your presence in the car park was for the purpose the landowner intended — i.e., to use their business.
## When this defence is strongest
### You have receipt evidence
A receipt from the store dated the same day as the alleged parking contravention is powerful evidence. It proves you were there as a customer.
**Pro tip**: Keep receipts from the store for any visit where you might overstay. Even a small purchase demonstrates customer status.
### Your overstay was reasonable for the visit
If the car park allows 2 hours and you stayed 2 hours 20 minutes while doing a large weekly shop, that's reasonable. A family shopping trip with young children, or a visit to multiple stores in a retail park, naturally takes longer than the time limit.
### The store itself acknowledges you
Some stores will confirm you were a customer if you contact their customer service team. A letter from the store manager stating you were shopping can be decisive.
## ParkingEye retail sites
ParkingEye manages car parks for Aldi, Lidl, and many retail parks. Their time limits (often 90 minutes or 2 hours) are designed for typical visits but don't account for busy periods, elderly shoppers, or multi-store trips.
When appealing a ParkingEye retail site ticket:
1. Provide your shopping receipt(s)
2. Explain what you were doing and why it took the time it did
3. Reference Beavis — the charge must serve the legitimate interest of managing parking for customers
4. Argue that penalising a genuine customer contradicts the scheme's stated purpose
## How to structure your appeal
1. **State you were a genuine customer** — "I was at [store] on [date] as a customer, purchasing [items/using services]"
2. **Provide evidence** — receipt, bank statement showing transaction, loyalty card records
3. **Explain the overstay** — "My visit took longer than the time limit because [specific reason]"
4. **Cite the legal principle** — "Per ParkingEye v Beavis [2015] UKSC 67, the parking charge serves the legitimate interest of managing parking for the landowner's customers. Charging a genuine customer contradicts this legitimate interest"
5. **Note proportionality** — a charge of typically 60-100 pounds for a customer who overstayed by minutes while spending money in the store is arguably disproportionate
## Limitations of this defence
Be honest with yourself:
- If you parked at a supermarket but walked to a completely different location, you weren't a genuine customer
- If you overstayed by several hours beyond any reasonable shopping time, the defence weakens
- If you have no evidence of a purchase or visit, the defence is harder to prove (though not impossible — you might have browsed without buying)
## Combining with other grounds
The genuine customer defence works well combined with:
- **Grace period** — you were a customer AND your overstay was within the grace period
- **Signage** — you were a customer AND the time limit wasn't clearly displayed
- **Proportionality** — you were a customer AND the charge is disproportionate to any loss the landowner suffered
## Bottom line
If you were genuinely using the facilities that the car park exists to serve, you have a legitimate and legally grounded defence. The Supreme Court said parking charges must serve the landowner's interest in managing parking for customers — not in punishing them. Keep your receipts, explain your visit, and cite Beavis.