Can a locksmith really make a car key with no original key at all?

Yes. A qualified auto locksmith with the right diagnostic kit and SERMI accreditation can cut a brand new mechanical blade and program the transponder to your car's immobiliser without needing any existing key. This is known in the trade as an all keys lost job and is something I do regularly across the North East.

What proof of ownership do I need to have a new key made?

I need to see the V5C logbook in your name (or a recent bill of sale) along with photo ID such as a passport or driving licence. These checks protect you and are part of working as a properly registered, SERMI accredited auto locksmith. Anyone offering to program keys without checking ownership should be avoided.

Is it cheaper to use a mobile locksmith or the main dealer for an all keys lost job?

Almost always cheaper with a mobile locksmith. The dealer route involves recovery costs, ordering keys in and a workshop appointment, which often doubles the total bill. I come to your vehicle, cut and program the key on site, and there is no call-out fee and no VAT.

How long does it take to make a new car key with no original?

Between 45 minutes and two hours from arrival in most cases. Older transponder keys are quicker. Modern proximity smart keys on post-2018 cars take longer because the SERMI authentication has to complete a secure handshake with the manufacturer's servers, but you will still be back on the road the same day.

Can you make a key without the original for any car?

For the vast majority of cars and vans on UK roads, yes. With SERMI accreditation I can cover modern Ford, BMW, Mercedes, Stellantis (Citroen, Peugeot, Fiat, Vauxhall, Jeep) and the full VAG group (VW, Audi, SEAT, Skoda). A small number of very recent high-end models still require the main dealer, and I will tell you straight if your car is one of them.

Will making a new key invalidate my old lost keys?

Yes. As part of the programming I can wipe any previously paired keys from the immobiliser memory, so the lost keys will no longer start the car. This is an important security step if you suspect the keys were stolen rather than misplaced.

Can a Locksmith Make a Car Key Without the Original?

It is one of the most common questions I get asked: "I have lost every key to my car. Can you actually make me a new one without the original?" The short answer is yes. A qualified mobile auto locksmith can cut and program a brand new working key for almost any vehicle, even when there is no original key, no spare and no key code to hand.

This is what the trade calls an all keys lost job, and it is something I deal with regularly across Durham, Newcastle, Sunderland, Middlesbrough and the wider North East. In this guide I will explain exactly how it is done, what kit and credentials are needed, what it costs and why a mobile locksmith is almost always faster and cheaper than the main dealer.

How an Auto Locksmith Makes a Key With No Original

Modern car keys are not just bits of cut metal. They contain a transponder chip and, in most cars built after around 2000, communicate with the vehicle's immobiliser. To make a working key from scratch I need to do two separate jobs: cut a mechanical key blade that physically fits the lock, and program a transponder so the engine will actually start.

1. Cutting the Mechanical Blade

Without an original key to copy, I either decode the existing door or ignition lock on site, or pull the key code from the vehicle's secure database using its VIN. From that code I cut a brand new blade on a precision laser or dimple key cutter inside my van. The result is a blade that turns the locks just like a factory key.

2. Programming the Transponder and Immobiliser

Once the blade is cut, the transponder chip inside the new key has to be paired to the car's immobiliser. I plug specialist diagnostic kit into the OBD port, authenticate with the vehicle and write the new key into the immobiliser memory. On older vehicles this can take minutes. On modern post-2018 cars with a secure gateway (BMW, Mercedes, Stellantis, Ford and others), it requires SERMI authentication. More on that below.

What I Need From You for an All Keys Lost Job

To make a key with no original, I need very little from you, but the few things I do need are essential:

Proof of ownership – V5C logbook in your name, or a recent bill of sale plus photo ID
The vehicle's reg number – so I can check the make, model, year and key system before I quote
Access to the vehicle – it can be on a driveway, in a car park, at the roadside or even on a recovery truck
Photo ID – passport or driving licence to confirm you are the registered keeper

These checks protect you. They are also the same checks any honest, properly registered locksmith should be carrying out. If a locksmith offers to cut and program keys to a car without ever asking for proof of ownership, walk away.

What Vehicles Can Be Done Without the Original?

Almost all of them. With the right diagnostic equipment, dealer-level software and SERMI accreditation, I can cut and program keys for the vast majority of cars and vans on UK roads, including:

Ford key replacement – Fiesta, Focus, Kuga, Transit, Transit Custom, Ranger and more
Vauxhall key replacement – Corsa, Astra, Insignia, Mokka, Vivaro
Volkswagen key replacement, plus Audi, SEAT and Skoda – the entire VAG group
BMW key replacement and Mini – including CAS3, CAS4 and FEM/BDC systems
Stellantis group – Citroen, Peugeot, Fiat, Vauxhall (post-merger), Jeep
Van key replacement for Mercedes, Iveco, Renault, Nissan and Toyota

There are a small number of vehicles where the only practical route is the main dealer (mostly very recent or very high-end models with proprietary security systems). I will always tell you straight if your car is one of them.

Why SERMI Registration Matters for Keys Without an Original

Since 2023, most major manufacturers have moved to a system called SERMI (Security-Related Vehicle Repair and Maintenance Information). It controls who can authenticate to a vehicle's immobiliser to add new keys. Without SERMI accreditation, an independent locksmith simply cannot program keys to a huge range of post-2018 cars.

I am a fully SERMI registered auto locksmith. That means when you have lost all your keys to a modern Ford, BMW, Mercedes or Stellantis vehicle, I can legitimately cut and program a working key on your driveway. If you want the full background on why this matters, read my dedicated post on why I became SERMI registered and why it should matter to you.

What Does It Cost to Make a Key Without the Original?

All keys lost jobs are more involved than cutting a simple spare car key, so they cost more, but they are still significantly cheaper than the main dealer once you factor in recovery costs and dealer labour rates. As a rough 2026 guide:

Older non-transponder keys – from around £80
Standard transponder keys (early 2000s onwards) – from around £120
Remote flip keys for popular hatchbacks and saloons – typically £180–£280
Proximity / keyless smart keys for modern cars and vans – typically £250–£450
High-end keyless systems (BMW FEM/BDC, Mercedes FBS4, modern Range Rover) – typically £400–£700+

These prices are for a brand new key, cut and programmed on site, with no call-out fee and no VAT. For a full breakdown read my 2026 car key cost guide for the North East.

How Long Does It Take?

Most all keys lost jobs take between 45 minutes and two hours from the moment I arrive. Older transponder keys can be done in under an hour. Modern proximity keys with full SERMI authentication take a bit longer because of the secure handshake with the manufacturer's servers.

Either way, you will be back on the road the same day. Compare that to the dealer route which usually means a recovery truck, a wait of several days for keys to be ordered, then a workshop slot to program them.

Mobile Auto Locksmith vs Main Dealer

When you have lost every key, the dealer is rarely the fastest or cheapest option. Here is the comparison I see play out almost every week:

Recovery – the dealer needs the car at their workshop. That is a recovery cost on top of everything else. I come to you.
Time – dealer keys are usually ordered in, then programmed at a booked slot. Several days, sometimes longer. I do the whole job in one visit.
Cost – dealer parts, labour and recovery often total double what a mobile locksmith charges for the same key.
Convenience – I work evenings and weekends. The dealer works 9 to 5.

What to Do If You Have Lost All Your Car Keys

Stay calm and check thoroughly – pockets, bags, around the car, under seats. Keys turn up surprisingly often.
Have your V5C and photo ID ready so the locksmith can verify you are the registered keeper.
Call a SERMI registered mobile auto locksmith and give them your reg number. They can quote you on the spot.
Get a clear, all-in price before you commit. No call-out fee, no VAT, no surprise add-ons.
Once the new key is made, I always recommend ordering a spare while my van is still on your driveway. It costs a fraction of another all keys lost job later.

If you are stranded right now anywhere across Durham or the North East, I can usually be with you within 30 to 60 minutes. For more on what to do in the meantime, see my guide on what to do if you are locked out of your car, or if you suspect an ignition fault rather than lost keys, read my ignition problems signs and solutions guide.