Why do number plate suppliers ask for ID?

Being asked for documents when you buy a number plate can feel like red tape. It isn't — it's the law for every DVLA-registered supplier, and it exists for one reason: to stop plate cloning. This page explains what the law requires, what we check, exactly what happens to your documents at NumberPlater, and why a seller who doesn't ask is the real warning sign.

The document check is the law

Number plates in the UK can only be supplied by businesses on the DVLA's Register of Number Plate Suppliers — supplying plates without being registered is illegal. Registration comes with obligations, not just a number:

Suppliers must verify the buyer's entitlement to the registration and their identity before making a plate.
Suppliers must keep records of those checks for at least 3 years.
Those records are inspectable by the DVLA, the police and Trading Standards.

So when we ask for your V5C and photo ID, we're not being cautious — we're doing the thing the register exists to make every supplier do. We're registered as RNPS No. 75456.

What the check is protecting: you

The rule exists to make plate cloning hard. Cloning is when someone puts your registration on another car — usually a similar make and colour — so that whatever that car does is traced back to you. Speeding fines, unpaid tolls, parking charges, or worse, all landing on the registered keeper who's done nothing wrong, and who then has to prove a negative to get each one overturned.

Cloning needs a physical plate, and the document check is the choke point: if every supplier verifies that the buyer is actually entitled to the registration, a cloner can't simply order a copy of your plate. Every supplier who skips the check is the gap the whole system leaks through.

What we check

Two things, and only two things:

Proof of entitlement — that the registration is yours to display. A V5C logbook, the green new-keeper slip, a V750 certificate of entitlement or a V778 retention document are the common ones.
Proof of identity — that you are who the entitlement says you are. A photocard driving licence or passport is typical.

The full accepted lists for both are in our documents guide. Whatever you use, send clear original documentation — copies and screenshots aren't accepted.

What happens to your documents at NumberPlater

Since we're asking you to trust us with documents, here's the exact journey they take:

Uploaded at checkout — as part of the order, not in a follow-up email chain.
Encrypted, and used only for verification — never for marketing, never shared for any other purpose.
A human makes the final call. Verification isn't left to software alone — a person reviews the documents and decides.
You're not charged until verification passes. If we can't verify entitlement, no plate is made and no payment is taken.
Held securely for the record-keeping period, then securely erased. We keep verification records for 6 years — the DVLA's minimum is 3; keeping them for 6 is our own business best-practice choice — and they remain inspectable by the DVLA, police and Trading Standards throughout.

The red flag: a seller who doesn't ask

Flip this guide around and it becomes a buying test. A seller offering road-legal plates without asking for any documents isn't saving you hassle — they're not following the rules that every registered supplier is bound by. That tells you something about the plate you'd receive, too: a business casual about the register tends to be casual about the standard, and an undocumented "road-legal" plate is often a show plate in everything but the listing title. The two minutes it takes to upload your documents is the system working as designed — for the person whose registration is on the plate.

Quick answers

Is it legal for a supplier to sell plates without checking documents?

No. It's illegal to supply number plates without being on the DVLA's Register of Number Plate Suppliers, and registered suppliers must verify a buyer's entitlement and identity before making a plate. A seller who skips the check isn't following the rules.

What will I be asked for?

Two things: proof you're entitled to the registration (a V5C, new-keeper slip, V750, V778 or similar) and proof of who you are (a photocard driving licence, passport or similar). Send clear original documentation — copies and screenshots aren't accepted.

How long does NumberPlater keep my documents?

For 6 years, held securely for the record-keeping period, then securely erased. The DVLA requires suppliers to keep records for at least 3 years — keeping them for 6 is our own business best-practice choice.

When am I charged?

You're not charged until verification passes. If we can't verify your entitlement, the order doesn't go ahead and payment isn't taken.

Need a plate that's actually legal?

Build yours in our configurator — legal font, sizes and spacing are applied automatically, and every order is entitlement-verified before you're charged. If a combination isn't road-legal, it won't let you build it.

Build your plate →

Related guides

Reviewed 2026-07-02 · Written by Numberplater Ltd, a DVLA-registered number plate supplier (RNPS No. 75456). This guide is general information, not legal advice — the rules summarised here are set out in full in DVLA guidance (leaflet INF104 and GOV.UK).