What does "Thatcham approved" mean? Understanding S5 7 Trackers

If you've ever looked into vehicle trackers, immobilisers or vehicle security systems, or had a chat with your insurance company about insuring a vehicle, you've probably come across the phrase:

"Thatcham Approved."

You'll also see things like:

• Thatcham S5 Tracker

• Thatcham S7 Tracker

• Thatcham Approved Immobiliser

• Insurance Approved Tracker

At which point, most people nod politely and think:

"No idea what that means, but it sounds expensive."

You're not alone.

When I first entered the vehicle security industry a couple of years back, I heard engineers and sales reps throwing around terms like "Thatcham S5" and "Thatcham Category" as if everyone should know what they meant.

I didn't. I had to ask my boss at the time.

So let's translate it into normal human language.

What Is Thatcham?

Thatcham is an independent organisation that tests vehicle security products.

Think of them as the people whose job is to ask:

"Does this security device actually do what the manufacturer says it does?"

Because let's be honest.

If I invented a tracker tomorrow, (unlikely, electrical engineering, not my strong point) I could market it like it was the greatest thing since sliced bread. (As a marketing consultant, this would definitely be more my thing)

That doesn't make it true or substantiate my bold marketing claims

Insurance companies know that manufacturers will naturally tell you their products are brilliant. (That's what marketing teams are for, eh?)

So rather than simply taking their word for it, insurance companies rely on independent testing.

That's where Thatcham comes in.

Why Do Insurance Companies Care?

Insurance companies don't particularly enjoy paying out tens of thousands of pounds for stolen vehicles. Shocking, I know.

The more likely a stolen vehicle is to be recovered, the lower the risk for the insurer. The lower the risk, the more money stays in the insurance company's pocket, right where they want it.

The lower the risk, the happier the insurer tends to be.

That's why you'll often find insurance companies asking for Thatcham-approved security devices, particularly on:

• Performance vehicles

• Luxury vehicles

• High-value cars

• Motorhomes

• Campervans

• Horseboxes

• Commercial vehicles

• Agricultural machinery

They know these systems have been independently tested against recognised standards.

So Does Thatcham Make The Trackers?

No. Thatcham are totally independent.

This is a common misconception.

Thatcham don't manufacture trackers.

Thatcham don't manufacture immobilisers.

Thatcham don't install security systems.

Instead, manufacturers submit their products to Thatcham for testing.

If the product meets the required standards, it receives approval.

Think of it like an exam.

The manufacturer builds the product.

Thatcham marks the paper.

What Is An S5 Tracker?

If my senior engineer reads my simple explanation of an S5 tracker, his eyeballs might pop out of his skull, and a vein in his forehead might start pulsing. But you and I don't need to know how to install one; we just need to know what it is and what it does.

An S5 tracker is one of the highest levels of vehicle tracking currently recognised by insurers.

These systems typically include additional security features beyond simple location tracking. Things like driver recognition.

Many insurers specifically request S5 trackers for higher-value vehicles.

If you've ever received an insurance quote saying:

"Tracker required"

they're often referring to an S5 system.

What's the difference between an S5 Tracker and an S7 Tracker?

The simple version:

S5 Tracker: This is the all-singing-all-dancing one most insurance companies want.

An S5 tracker knows where the vehicle is and who is driving it.

It uses something called driver recognition. This is can be done with a small tag, smartphone app, or other identification method.

If the vehicle starts moving and the tracker doesn’t detect the authorised driver, the 24/7 monitoring centre is alerted and will contact you.

S7 Tracker: Despite having a bigger number, it's the lesser device.

An S7 tracker knows where the vehicle is, but it doesn’t verify who is driving it.

It will still track the vehicle if it’s stolen and help with recovery, but it doesn’t have the driver recognition element

Why Doesn't My Factory Tracker Count?

This is another question we hear regularly.

Modern vehicles often come with some form of built-in tracking or connected vehicle technology.

Many factory systems are designed to help owners locate their vehicle, check service information or access vehicle data.

Dedicated Thatcham-approved aftermarket tracking systems are designed specifically around theft prevention and vehicle recovery.

That's one reason insurance companies often insist on an aftermarket Thatcham-approved tracker, even when a vehicle already has factory tracking technology.

Is A Thatcham-Approved Product Worth It?

In many cases, yes. Not because the Thatcham sticker itself magically stops thieves.

But because the approval tells you the product has been independently assessed against recognised industry standards.

It's a bit like buying a helmet.

Would you rather buy:

Option A:
"Trust me mate, it's safe."

Or Option B:
A helmet that's been independently tested and certified.

Most people would choose Option B.

Vehicle security isn't much different.

The Bottom Line

Thatcham approval doesn't mean a product is indestructible or that a vehicle can never be stolen

But it does mean is that the product has been independently tested and assessed against recognised industry standards for preventing vehicle theft.

That's why insurance companies trust it.

That's why installers recommend it.

And that's why you'll keep seeing the phrase "Thatcham Approved" whenever you start researching vehicle security.

At Autonox, we're always happy to explain the industry jargon without the waffle.

Because let's face it, vehicle security is confusing enough already.

If you're considering having a Thatcham Approved security device fitted to your vehicle
(or have been informed by your insurance you need one fitting)
Our vehicle security advisors are more than happy to have a natter with you about what devices are compatible with your vehicle, the best option for your budget or the best biscuit to dunk in your tea.

You can give our security advisors a call on 0800 820 3679 between 7am and 10:30pm or you can fill out a form HERE, and we'll give you a bell at a time that suits you. There's never any obligation when speaking to our advisors and experts; we'll simply tell you the best option for your vehicle, insurance needs and budget.