Skip to main content

SERMI-Approved
Auto Locksmith in Sussex

Fast, Trusted & Fully Certified

Locked Out? Lost Your Car Keys? We’re Here to Help… Fast.

  • Verified Digital Access To Vehicle Security Details
  • Police (DBS) and Formal Identity Checked
  • Legitimate Operator – Approved Auto Locksmith
  • Modern Vehicle Security-Approved
  • Qualified to Work On Immobilisers & ECUs
  • Increased Security For Modern Vehicles
  • Compliant With Manufacturer Warranties & Insurance

What Is SERMI? Why Does It Matter?

SERMI (Security-Related Vehicle Repair and Maintenance Information) is a certification system that controls who can access your car’s security systems.

Think of it as a strict security clearance for auto locksmiths.

Why does that matter to you?

Your car’s security data is incredibly sensitive.

Without proper regulation, the wrong person could potentially access or damage systems designed to protect your vehicle.

SERMI ensures that only fully vetted, qualified professionals can legally work on these systems.

Will, our SERMI-approved locksmith, operates across Sussex, Surrey and Kent. He has:

✓ Passed background checks
✓ Been fully authorised to access manufacturer-level vehicle data
✓ Our service meets strict UK and European security standards

Ensuring that your auto locksmith is SERMI-approved means they meet and exceed the criteria to manage your vehicle security data.

Get a FREE quote today:

07807 901 956

How The Car Key Company Sussex Can Help:

Why Choose Our SERMI-Approved Auto Locksmith Services in Sussex?

1Fast Emergency Response: When You Need It Most


Car key problems never happen at a convenient time.

It’s always when you’re late, tired, or stuck somewhere unfamiliar. That’s why our service is built around speed and reliability.

We operate across Sussex with rapid response times, meaning you won’t be left waiting around wondering when help will arrive.

Whether you’re in a busy town or a quieter rural area, we aim to reach you quickly and get straight to work.

And because we’re fully equipped mobile locksmiths, we fix the problem on-site.

No need to tow your car or visit a dealership. You stay where you are… we bring the solution to you.

2Fully Certified & SERMI-Approved Technician

Not all auto locksmiths are legally authorised to handle modern vehicle security systems.

Our technicians are SERMI-approved, meaning they’ve undergone:

  • Identity verification
  • Criminal background checks
  • Professional competency assessments

This certification allows us to access the secure systems needed for advanced services like key programming and immobiliser resets.

For you, that means total confidence. You’re not just letting anyone work on your car; you’re choosing a verified professional who meets the highest standards in the industry.

3Dealership-Level Service Without the Price Tag

If you’ve ever contacted a dealership for a replacement key, then you’ll know they can be horrifically expensive.

Dealerships often charge premium rates and require you to bring the vehicle to them. This may even involve paying a towing fee.

We offer a better level of service at a fraction of the cost.

Thanks to SERMI approval, we have access to the same security data and tools used by manufacturers.

That means:

  • No unnecessary delays
  • No inflated costs
  • No compromise on quality

You get expert service without the dealership hassle.

Ready To Go?

The quicker you book in, the quicker we can come!

Get in touch with Will at the Car Key Company on 07807 901 956 to get a spare key at a time and place convenient to you.

How can we assist?

Our Auto Locksmith Services in Sussex:

Lockout Assistance & Emergency Car Entry

Locked your keys inside the car?

It happens more often than you’d think!

Our auto locksmith uses specialist tools and techniques to unlock your vehicle without causing damage, even on newer models with advanced locking systems.

Because we’re SERMI-certified, we understand exactly how your car’s security system works, so there’s no guesswork involved.

You’ll be back inside your car faster than you expect.

Car Key Replacement & Lost or Broken Keys

Losing your car keys can feel like a disaster, but it doesn’t have to be.

We provide on-the-spot key replacement for most makes and models.

Whether it’s a traditional key, a remote fob, or a smart key, we can cut and program a new one while you wait. And because we’re authorised to access secure vehicle data, the new key integrates seamlessly with your car’s system.

It’s not just a replacement; it’s a fully functional, secure solution.

A Push button start on a vehicle that uses proximity keys.

Advanced Key Programming & Remote Setup

Modern car keys are more like mini-computers than simple tools. Programming them requires access to encrypted systems—and that’s exactly what SERMI certification allows us to do.

We handle:

  • Remote key programming
  • Smart key configuration
  • Keyless entry system setup

If your key isn’t responding or needs reprogramming, we’ll get it working properly again—quickly and securely.

A Push button start on a vehicle that uses proximity keys.

Immobiliser & ECU Diagnostics and Repairs

Modern car keys are more like mini-computers than simple tools. Programming them requires access to encrypted systems, and that’s exactly what SERMI certification allows us to do.

We handle:

  • Remote key programming
  • Smart key configuration
  • Keyless entry system setup

If your key isn’t responding or needs reprogramming, we’ll get it working properly again… Quickly and securely.

Our expert Automotive Locksmith Will, is ready to assist you today.

07807 901 956 

Get a free quote.

Why should you bother?

Reasons To Get A New Key:

Call or enquire online

✓ Tell us what’s happened, your vehicle make & model and how we can assist you.

Get a free quotation before committing

✓ We’ll let you know the cost before arranging the details, so you know exactly what to expect.

We come to your location in Sussex

✓ Our fully-mobile service means our mobile workshop will stock all the keys & parts needed for the job.

Problems will be solved on-site

✓ Our experienced auto locksmith, Will, is qualified and ready to assist with the most challenging key issues.

SERMI-Approved Auto Locksmith FAQs:

What does SERMI-approved mean for customers?

It means the locksmith is fully vetted and authorised to access your car’s security systems safely and legally, giving you peace of mind.

How do I know if an auto locksmith is SERMI-approved?

A genuine SERMI-approved auto locksmith will be able to confirm their certification and explain what it means for your vehicle security.

This includes being registered, vetted, and authorised to access restricted vehicle data.

If a locksmith avoids the question or can’t provide clarity, that’s a red flag.

Choosing a certified professional ensures your vehicle’s security systems are handled legally and safely, without risk of misuse or unauthorised access.

Is your locksmith service insured?

Yes, our services are fully insured for your peace of mind.

This means you’re protected in the unlikely event of any issues during the work.

Combined with our SERMI certification, this provides an extra layer of reassurance that you’re dealing with a professional, responsible service provider.

Can you disable old or stolen keys?

Yes, this is an important service for security.

If your keys have been lost or stolen, we can remove them from your vehicle’s system so they can no longer be used.

We then program new keys that are recognised by your car.

This ensures that even if someone finds or has your old key, they won’t be able to access or start your vehicle.

What types of vehicles can you work on?

We work on a wide range of vehicles, including cars, vans, and light commercial vehicles from most major manufacturers.

Whether you drive a Ford, BMW, Audi, Mercedes, Vauxhall, or Volkswagen (for example), we have the tools and authorisation to handle your vehicle.

Thanks to SERMI approval, we can access manufacturer-level systems, which allows us to work on modern vehicles with advanced security features just as effectively as older models.

Can you help with keyless entry problems?

Yes, keyless entry systems can sometimes fail due to signal issues, battery problems, or system faults.

We can diagnose the issue and either repair or reprogram the system to restore functionality.

Our access to secure vehicle data ensures the work is done correctly and safely.

Can you replace car keys without the original?

Yes, we can create and program a new key from scratch, even if the original is completely lost.

Our SERMI status means we have access to all the security data that dealerships have. 

How quickly can you reach me in Sussex?

Response times vary by location, but we aim to arrive as quickly as possible.

… Often within an hour or two.

We do, however, get booked up and may need to factor in travel times.

We always arrange a time and place that is convenient to you, and ensure we keep you updated.

Do you cover areas outside Sussex?

Yes, we also provide services across Kent and Surrey with the same high standards.

It may take us a little longer to get to you and will sometimes require booking for a next-day service.

What areas do you cover for emergency callouts?

No, and this is one of the biggest advantages of choosing a SERMI-approved locksmith.

We cover all of Sussex, including towns and surrounding areas, as well as most of Kent and Surrey.

Our mobile service means we come directly to your location, whether you’re at home, work, or stranded on the roadside.

No matter where you are in our coverage area, you can expect fast and reliable assistance.

How long does the work take?

This will vary by the complexity of the job.

Most spares or repairs can take less than half an hour.

Complex tasks like lock replacement, ECU or immobiliser diagnostics and repairs can take a few hours. 

We always try to indicate the rough time the work will take.

Can you help if my key is stuck in the ignition?

Yes.

This is a common issue and something we deal with regularly.

A key stuck in the ignition can be caused by worn components, steering lock issues, or internal faults.

Our mobile locksmith can diagnose the problem on-site and safely remove the key without damaging your ignition system.

If needed, we can also repair or replace faulty components to prevent them from happening again.

Do you offer spare key services?

Yes, and it’s something we highly recommend.

Having a spare key can save you time, money, and stress in the future.

We can cut and program spare keys for most vehicles, ensuring they are fully functional and secure.

Because we use authorised systems, your spare key will work just like the original, giving you a reliable backup whenever you need it.

What is ‘key cloning’, and do you offer it?

Key cloning involves copying the data from an existing key onto a new one.

While this can be useful in some situations, modern vehicles often require full programming rather than simple cloning.

As a SERMI-approved locksmith, we focus on secure, manufacturer-compliant methods, ensuring your vehicle remains protected and your keys function correctly without compromising security.

Can you fix remote locking issues?

Yes, if your remote locking system isn’t working properly, we can diagnose and repair the issue.

This could be due to a faulty key fob, a problem with the vehicle’s receiver, or a programming issue.

We’ll identify the root cause and fix it efficiently, restoring full functionality to your remote system.

Why is SERMI important for modern cars?

Modern vehicles rely heavily on electronic security systems to prevent theft.

SERMI ensures that only authorised professionals can access and work on these systems.

Without it, there’s a higher risk of unauthorised access or incorrect repairs.

Choosing a SERMI-approved locksmith ensures your car’s security is never compromised.