8 red flags that mean a locksmith is a scam — with the 30-second check for each
- Red flag 1 of 8
"From £39 / £49 / £59" headline pricing
The pattern. The lowest advertised price the reader will ever see. Once the trader is on site, the total lands at £250 to £800 for a job that should have cost £70 to £150.
Why it's a red flag. The headline price only covers the first minute of attendance. Call-out, labour, VAT, parts and "difficulty surcharges" are all added once your door is open and the leverage has swung to their side.
The 30-second check. Before they set off, ask in writing: "What is the total price for [describe your job], including call-out, labour, VAT and any standard parts?" If the reply is "we'll see when we get there", "from £X", or silence — that IS the answer. - Red flag 2 of 8
National call centre wearing a local mask
The pattern. "Your local Anytown Locksmith" turns out to be a call centre in another city that dispatches whichever subcontractor is nearest and takes the lowest cut for them to hire.
Why it's a red flag. You never know who is actually coming, who they work for, or who to chase for a refund. The trading name on the ad, the person at your door, and the bank details on the invoice can be three different entities.
The 30-second check. Ask on the phone: "Is the locksmith attending on your staff, or a subcontractor? Who am I paying — you, or them?" Then Google the trading name plus the phone number in quotes and see whether the same number is tied to multiple unrelated "locksmith" sites. - Red flag 3 of 8
No Companies House record for the trading name
The pattern. The trader operates under a plausible-sounding name that has no matching entry in the UK companies register — or the entry exists but the trading name and registered office do not match what is on the advert.
Why it's a red flag. A genuine UK limited-company locksmith is a matter of public record. A trader who cannot produce a Companies House number is either not a limited company (fine on its own, but a signal) or is trading behind a name designed not to be traceable.
The 30-second check. Ask outright for the Companies House registration number, then look it up on find-and-update.company-information.service.gov.uk. Trading name mismatch, mail-forwarding registered office, or "we don't have one" all mean pause and get a second opinion. - Red flag 4 of 8
"Police approved" or "police recommended"
The pattern. An advert, van sticker, business card or website claims the trader is endorsed by the police in some form.
Why it's a red flag. The UK police do not endorse individual locksmiths. Any trader making that claim is either lying by definition, or is repeating a lie the marketing agency wrote for them without checking — either way, the claim is false.
The 30-second check. Any use of the phrases "police approved", "police recommended", "police vetted", or similar is enough on its own. End the call, try a different trader. Full explainer: /police-approved-locksmith-myth. - Red flag 5 of 8
Refusal to attempt non-destructive entry first
The pattern. The trader tells you on the phone that they will drill the lock, or arrives and reaches straight for the drill without attempting to pick, bump, slip or otherwise open the lock without damage.
Why it's a red flag. Most residential UK lockouts can be opened without damage in under fifteen minutes by a competent locksmith. Drilling destroys the cylinder and turns a £70 lockout into a £250 lock replacement — which is exactly why a rogue trader defaults to drilling.
The 30-second check. Before they set off, ask: "What methods will you try before drilling, and only drill if none of those work?" A genuine locksmith will describe two or three attempts in order. An immediate "we'll just drill it" answer is the strongest red flag on this list. - Red flag 6 of 8
Cash only, or bank transfer to a personal name
The pattern. The invoice will only be settled in cash on completion, or by bank transfer to an account in a person's name rather than the trading company's name.
Why it's a red flag. Cash and personal-name transfers cut two things: HMRC visibility, and your Section 75 / chargeback protection. Section 75 of the Consumer Credit Act 1974 only applies to credit-card payments, so paying by cash strips your best route to a refund.
The 30-second check. Ask on the phone: "Do you accept credit card on completion?" If the answer is a hard no plus a cash push, treat that as the answer. Even a debit card leaves you a chargeback route; cash leaves you almost nothing. - Red flag 7 of 8
Unmarked van, no photo ID, no written invoice
The pattern. The trader arrives in an unmarked or badly-signwritten van, refuses to show photo ID, and completes the job without offering a paper or emailed invoice.
Why it's a red flag. Every reputable trading company signwrites its vehicles, issues photo ID to its engineers, and produces an invoice on completion — because those are exactly the artefacts a customer needs if the job goes wrong. Their absence is not a coincidence.
The 30-second check. On arrival, ask for photo ID and note the van's registration plate. After they leave, look up that reg on the DVLA vehicle-check service and check whether the registered keeper matches the trading name on the ad. Ask for a written invoice before you pay. - Red flag 8 of 8
On-site price change with pressure tactics
The pattern. The £59 quote on the phone becomes £500 once the door is open. The trader will not leave until you pay. You are told the lock is a "special" or "security" type that costs extra.
Why it's a red flag. This is the closing move of the whole scam — every earlier red flag exists to get to this moment, where you are in your hallway with the door open, the lock destroyed and someone insisting on cash before they leave.
The 30-second check. Do not authorise anything until a new total is in writing. Under section 51 of the Consumer Rights Act 2015, where no price is fixed only a reasonable price is payable — so if the original £59 was never confirmed in writing, they are already in the position of arguing what "reasonable" means. If they threaten or intimidate you, dial 101 for police non-emergency, or 999 if you feel unsafe.
If you are seeing one of these right now
Before they arrive: end the call, try a different trader. Nothing is so urgent that you should let a rogue trader into your home; a locked door will wait another twenty minutes while you find someone with a real Companies House record and a written price.
At your door, before work starts: ask for a fixed total in writing. If they refuse, do not let them start. If they have already forced the situation, insist that any additional work is quoted in writing before it happens.
While work is happening: photograph the lock, the van, the ID, and note the timings. If you feel unsafe or are being intimidated, dial 101 for police non-emergency, or 999 if the situation escalates. Call the Citizens Advice consumer helpline afterwards on 0808 223 1133 (England and Wales, Mon–Fri 9am–5pm).
After the fact — if you have been charged unfairly: run our dispute-strength check — it produces a case-strength score and a pre-filled complaint letter in under a minute.
Frequently asked questions
What is the single biggest red flag for a UK locksmith?+
Are "from £39" adverts always a scam in the UK?+
How do I check a UK locksmith's Companies House record?+
Is it a red flag if the locksmith wants to drill the lock straight away?+
What should I do if a locksmith is at my door demanding a much higher price than quoted?+
Does the UK police ever officially recommend a locksmith?+
Sources and useful contacts
- Companies House — find and update company information
The government register of UK limited companies. Free to search.
- DVLA — check a vehicle's registration
Look up a van by its number plate to confirm the registered keeper.
- Citizens Advice — consumer helpline and complaint routing
Helpline: 0808 223 1133 (England and Wales), Mon–Fri 9am–5pm.
- Consumer Rights Act 2015 — section 51 (reasonable price)
Where no price is fixed, only a reasonable price is payable.
Related: run the 60-second verification checklist before you call anyone, or the dispute-strength check if a locksmith has already charged you unfairly.
Deeper on red flag #4: “Police approved” locksmith — the UK myth.
Or run the trader name through the verify-a-locksmith-by-name tool — one-click links to Companies House, the ICO register and LockSafe’s verified list.
Skip every red flag on the list
LockSafe runs the company checks for you, shows the assessment fee upfront, delivers an itemised quote to your phone before any work starts, and records a timestamped PDF of the whole job. Every red flag on this page collapses when the price is agreed in writing before the door is touched.