Quick answer
- ✓Do not force the door. UK deadlocks make DIY entry impossible and you will pay for the damage plus the locksmith.
- ✓Cost, fromĀ£80 for a mobile auto locksmith in South Yorkshire. No VAT, no call-out fee.
- ✓Time, 5 to 15 minutes to open once on site. Aaron reaches most of South Yorkshire in 30 to 45 minutes.
- ⚠Child or pet inside? Call 999 first. Do not wait for a locksmith.
Call 999 immediately if
- A child or baby is locked inside. Cabin temperature rises dangerously fast even on mild days.
- A pet is locked inside, particularly in sun or with the heating running.
- The engine is running in a garage or enclosed space, carbon monoxide risk.
- The car is on a live carriageway or blocking traffic.
Locked keys in car, what to do, in order
Most people reach for the door handle and start pulling. That wastes the first two minutes and occasionally damages the handle. Work through these four steps instead.
Check every door, the boot and the windows
Modern central locking does not always engage every door. Try all four handles, the tailgate, and check whether a window is open far enough to reach the interior handle. This takes ten seconds and resolves a surprising number of lockouts.
Check if anyone else has your spare
A partner, parent or housemate with the spare key at home is faster and cheaper than any locksmith. If someone can reach you within 30 minutes, that is your best option.
Check your insurance or breakdown cover
Breakdown policies often include lockout assistance.Check your policy before paying out of pocket, but be aware the wait is often 60 to 120 minutes.
Call a mobile auto locksmith
If none of the above applies, call an auto locksmith. Aaron opens most UK cars in 5 to 15 minutes using non-destructive entry. Price is confirmed on the phone before he sets off, no VAT, no call-out fee.
Why DIY entry does not work on modern cars
Every UK car built since roughly 2010 uses a deadlocking system. When the car locks, a second mechanism engages that physically disconnects the interior door handle from the latch. That means even if you get a tool inside the cabin and pull the handle, the door will not open.
This is a theft-prevention feature. It also means every DIY method you will find on YouTube was designed for cars from the 1990s.
| DIY method | What it damages | Repair cost |
|---|---|---|
| Coat hanger through the window seal | Tears weatherstripping | £50 to £200 |
| String / shoelace loop over the door top | Tears door seals, scratches paint | £100 to £400 |
| Slim jim tool | Cuts wiring looms and airbag sensors inside the door | £200 to £900 |
| Wedging or pumping the door frame | Bends the frame, often permanently | £300 to £800 |
| Smashing a window | Glass, respray, and the deadlock still holds | £150 to £500 |
The pattern here is consistent, you pay for the damage and you still need a locksmith afterwards. It is the worst of both outcomes.
Aaron’s tip
The jobs that cost customers the most are the ones where they tried a coat hanger first. I have opened cars in eight minutes where the owner had already caused £300 of seal damage in the twenty minutes before calling. If the keys are in there, stop and pick up the phone.
If the engine is still running
Keyless-entry cars auto-lock while running more often than people expect. You step out to scrape the windscreen or pay for fuel, the car decides the key has left, and the doors click shut with the engine idling.
This is more urgent than a standard lockout for three reasons, fuel is burning, the cabin is heating or cooling continuously, and in an enclosed space there is a carbon monoxide risk. Read the full guide on locked car with engine running for the detail.
If the car is outdoors, unattended and nobody is inside, it is safe to wait for a locksmith. If any of the 999 conditions above apply, call emergency services first.
How much does it cost to unlock a car in the UK?
A mobile auto locksmith lockout in the UK typically runs £85 to £150, with evenings and weekends often carrying a surcharge. Dealerships do not offer this service at the roadside, they will require the car recovered to a workshop, which adds recovery cost and a multi-day wait.
| Situation | Aaron (no VAT) | UK average |
|---|---|---|
| Vehicle lockout, keys inside | From £80 | £120 to £250 + VAT |
| Lockout, keys locked in boot | From £80 | £120 to £250 + VAT |
| Lockout with engine running | From £80 | £150 to £300 + VAT |
| Lockout + spare key cut same visit | From £140 | £250 to £500 + VAT |
Aaron charges the same rate at 3am as at 3pm. No VAT, no call-out fee, no night surcharge. The price quoted on the phone is the price you pay. Full detail on the vehicle entry and lockout service page.
Locked out right now?
Aaron covers South Yorkshire 24/7. On site in 30 to 45 minutes. Open in 5 to 15 minutes. No VAT, no call-out fee.
How an auto locksmith opens the car without damage
The technique is called non-destructive entry. Aaron uses an air wedge to create a two-millimetre gap at the top corner of the door frame, within the natural flex of the seal, so nothing tears. A long-reach tool then goes through that gap to press the interior unlock button or pull the manual lock pin.
On cars where the interior button is disabled by the deadlock, the approach changes, the lock cylinder is decoded and a working key is cut on the spot. That takes longer but still leaves no mark.
Either way the car is opened, the seals are intact, and there is nothing for a future buyer or an insurer to find.
Watch out
National call-centre locksmith sites quote £49 online and then add a call-out fee, a VAT line and an out-of-hours surcharge once the van arrives. Ask for the total including VAT on the phone before you agree. Aaron quotes one number and that is the number.
How to avoid it happening again
- Get a spare cut. A spare car key from £120 is cheaper than a single lockout callout and removes the problem permanently.
- Leave the spare with someone local, not in the car, not in a magnetic box under the wheel arch where thieves check first.
- Turn off auto-lock if your car allows it in the settings menu. Most keyless vehicles do.
- Make it a habit to hold the key in your hand before shutting any door, including the boot.
