Mobile Auto
Locksmith in
London & Hertfordshire
Locked out, lost your keys or need a spare? Sebastian comes to you for car key replacement, programming and lock repairs.
Confirm the basic vehicle details manually. We will verify them before preparing the offer.
Car keys. Locks. Ignitions.
Emergency Locksmith
Stranded or unable to use the car?
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Car Lockout
Keys locked inside the vehicle.
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Car Key Replacement
Replace a missing or damaged key.
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Car Key Programming
Pair a compatible key with your car.
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Ignition & Lock Repair
Key stuck or ignition not turning.
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Immobiliser Installation
Check added vehicle-security options.
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Spare keys
Make a spare while one key still works.
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All keys lost
No working key left? Start here.
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Key & remote repair
Buttons, casing or remote problems.
View serviceOn the road with Sebastian
MAN TGX lock-barrel recoding
Inside the lock on a MAN TGX: Sebastian shows a lock-barrel recoding job.
Watch on YouTube ↗Ignition & Lock RepairWhat is inside a car key?
Sebastian explains the parts of a car key: a useful starting point for understanding why cutting a blade and programming a key are different jobs.
Watch on YouTube ↗Car Key ProgrammingVolkswagen Jetta boot lockout
Sebastian shares a Volkswagen Jetta lockout callout in Aylesbury, with the key locked in the boot.
Watch on YouTube ↗Car LockoutSelected videos from Sebastian’s YouTube channel. Press play to choose whether to load YouTube, or use the direct link. Some videos are in Romanian.
From a key problem to the right next step.
Tell us about the vehicle
Enter your registration, describe the problem and add the vehicle location.
Receive your quote
Sebastian checks the details and sends the proposed work and price.
Arrange the visit
Discuss the quote by WhatsApp or phone. Online booking is available if you prefer.
Sebastian comes to the vehicle.
At home, at work or in a car park, the work starts with your vehicle and its location. Sebastian is based near Watford and takes mobile auto locksmith enquiries across London, Hertfordshire and nearby towns. Send the postcode and say whether the vehicle can move; he will confirm the journey, access and availability before agreeing a visit.
Where do you need help?
Send the exact vehicle location. Availability depends on the service, postcode and current schedule.
A few useful answers.
Can you replace car keys if I have lost the only key?
Often a replacement can be assessed without an existing key. Send the registration, vehicle location and whether all keys are lost. The make, model, year and key system determine the available solution and price.
Do you come to my vehicle in London or Hertfordshire?
Yes, this is a mobile service. Share the exact vehicle location in the quote form, including parking restrictions or access details. Availability is confirmed for your postcode and the work required before a visit is agreed.
How much does a replacement car key cost?
The price depends on the vehicle, the type of key, whether a working key remains and the work at the vehicle. Send those details for a quote. The registration helps identify the vehicle but does not confirm key compatibility by itself.
I need help now. Should I complete the form?
Call Sebastian during working hours to check urgent availability. For today or tomorrow, WhatsApp is a useful way to send the registration and location together. Choose Flexible for a written quote; booking online is optional after the work is agreed.
Which car makes and keys can you help with?
Send your registration and explain what the key still does: unlocks the doors, turns in the ignition or starts the engine. Sebastian checks compatibility for your exact vehicle before confirming replacement, programming or repair.
Can I speak to Sebastian in Romanian?
Yes. Use English or Romanian on the website, on WhatsApp or by phone. You do not need to know the technical name of the fault; describe what happened and what still works.
Car key advice, without the guesswork.
Locked keys in the car? What to do next
Work out whether you need access, a replacement key or help with a failed remote. A few clear details make the first conversation more useful.
Read guide
What does a replacement car key quote need?
The right information helps distinguish a simple spare from an all-keys-lost job and makes it easier to compare what a quote actually includes.
Read guide
Car says “key not detected”: what should you check?
The message is a symptom, not a diagnosis. Record what still works and use the instructions for your exact vehicle before assuming it needs a new key.
Read guideLet’s get the next step sorted.
Send the vehicle details, or call if you need help now.