Lost Car Keys?
We’ll Get You Back on the Road
Mobile auto locksmiths for lost car keys, spare keys and replacement car key programming across the UK through our trained and vetted network.
Can you replace a car key
if I have no spare?
Yes. In many cases, a replacement car key can be cut and programmed even if you have lost your only key. The technician will identify your vehicle, confirm ownership, cut the correct key blade where required, programme the transponder or remote, and test the key before handover.
Some vehicles may require specialist parts, security access or additional time, but we’ll explain this before booking the job.
What type of lost key problem do you have?
Lost my only car key
No working key available. We’ll help arrange a replacement key to be cut and programmed.
Get QuoteLost one key but have a spare
We can help replace the missing key and recommend deleting old keys from the vehicle where appropriate.
Book Spare KeyStolen car keys
If your keys may have been stolen, ask about key deletion and security options for your vehicle.
Secure My VehicleHow it works
Tell us your vehicle
Give us your postcode, registration, make/model and what happened.
We confirm options
We check what key type your vehicle uses and whether a mobile technician can complete the job.
Your key is made
Where possible, the key is cut, programmed and tested at your location.
How much does lost car key replacement cost?
The price depends on the vehicle, key type, whether all keys are lost, and whether the key needs cutting, programming, remote coding or security work.
| Situation | What affects the price |
|---|---|
| Lost one key but have spare | Usually simpler because the vehicle can still be accessed and tested |
| Lost all keys | More complex because the technician may need to gain access, decode/cut and programme from scratch |
| Smart/proximity keys | Usually more expensive than basic remote keys |
| Stolen keys | May require deleting old keys or extra security steps |
| Dealer-only systems | Some vehicles may need specialist parts or extra time |
Why use Alter Keys for lost car keys?
Trained or vetted
Our network is built around professional standards, not random call-outs.
Alter Academy
Alter Keys is built by the team behind Alter Academy, a specialist training provider.
Mobile service
Where available, technicians come to your home, workplace or vehicle location.
Clear quotes
We aim to confirm the likely cost and process before sending a technician.
Our Technicians in Action
Real jobs completed daily across the UK.
Lost or stolen car keys?
If your keys may have been stolen, replacing the key may not be enough. Depending on the vehicle, a technician may be able to delete missing keys from the vehicle’s system so the old key can no longer start the car.
Lost car key replacement across our UK network
Frequently Asked Questions
Lost your car keys today?
Get a quick quote and we’ll connect you with a trained or vetted mobile auto locksmith.