Your insurer has asked for a Thatcham-approved tracker. Now you face the Thatcham S5 vs S7 tracker question. Pick the wrong one and your cover could fail after a theft.
Below you will learn what each category does and which one your insurer needs. We fit both across Kent every week, so this comes from real installs.
Thatcham S5 vs S7 trackers: the difference in one minute
An S7 tracker gives GPS tracking, movement alerts and 24/7 monitoring, and it satisfies most insurers. An S5 tracker adds Automatic Driver Recognition through driver ID tags. That feature blocks relay theft and key cloning. Insurers demand it for high-value cars.
| Feature | S7 tracker | S5 tracker |
|---|---|---|
| GPS and GSM location tracking | Yes | Yes |
| Movement and tow-away alerts | Yes | Yes |
| 24/7 monitoring centre | Yes | Yes |
| Automatic Driver Recognition (ID tags) | No | Yes |
| Defends against relay and key theft | Recovery only | Yes |
| Typical insurer requirement | Most vehicles | High-value vehicles |
| Relative cost | Lower | Higher |
Both options keep you insurance-approved. The right choice depends on your car and your policy wording.
What is a Thatcham-approved tracker?
A Thatcham-approved tracker is a device tested and certified by Thatcham Research. Thatcham Research is the UK insurance industry’s security authority, founded in 1969. Insurers rely on its categories to set theft-protection standards.
In 2019, Thatcham updated its system to fight modern theft. The old Category 5 became S5. The old Categories 6 and 7 merged into S7. So a policy that says Cat 5 now means S5.
What is a Thatcham S7 tracker?
The S7 tracker is the entry-level insurance-approved standard. It uses GPS and GSM to locate a stolen vehicle. It adds movement and tow-away alerts plus 24/7 monitoring. It satisfies most UK insurance policies.
Recovery after a theft is the main job of an S7. An immobiliser is not standard, though some units offer it as an option. You also need an active subscription for the monitoring to work.
ScorpionTrack S7 is a popular example. We are direct dealers for Track Manager, ScorpionTrack, Smartrack and Global Telematics. See the car trackers we fit for the current range.
What is a Thatcham S5 tracker, and what is ADR?
Every S7 feature sits inside an S5 tracker, plus Automatic Driver Recognition. ADR means you carry a small driver ID tag or card. Move the car without the tag nearby and the monitoring centre is alerted at once. This is the highest level of Thatcham tracker security.
ADR is what stops a thief who has cloned or stolen your keys. The keys alone will not carry your ID tag. So the system flags the theft straight away.
Some S5 systems also support remote immobilisation. Driver tags, though, are the feature that defines the S5 category. You can view our Thatcham-approved trackers to compare options.
One warning from our workshop matters here. ADR only works if you keep the ID tag away from your keys. Leave the tag in the car and you lose the protection. We explain this to every customer at handover.
Which Thatcham tracker does your insurer require?
Most insurers accept an S7 tracker. High-value, prestige and performance cars usually need an S5. Think Range Rover, BMW M, Audi RS or Mercedes-AMG models.
Here is how to confirm what your policy needs:
- Check your policy schedule or certificate for the Thatcham category.
- Match the wording to S5 or S7, and watch for old terms like Cat 5.
- Phone your insurer if the wording is unclear, and get the category confirmed in writing.
Fitting an S7 when your policy demands an S5 leaves you non-compliant. Your recovery claim could then be refused. Always confirm the category before you book the install.
Why high-value cars usually need an S5
Thieves target high-value cars with relay attacks. Relay theft copies your key signal to unlock and start the car. GPS-only recovery cannot stop this on its own.
Driver recognition changes the outcome. The car will not move quietly without your ID tag. The monitoring centre reacts before the thief gets far.
Relay theft has climbed across Kent and the London fringe. Owners of prestige vehicles here feel the risk most. An S5 gives them the protection insurers now expect.
Motoring bodies such as the RAC have warned about the rise of keyless car theft. Layered security helps, so consider pairing a tracker with a Ghost immobiliser. Our anti key-cloning protection adds another barrier for keyless models.
How much do S5 and S7 trackers cost?
Costs vary by brand, vehicle and install complexity. An S5 tracker costs more than an S7 on hardware and subscription. Both need an active subscription for the insurer condition to hold.
Professional installation forms part of the price and part of the compliance. We give clear quotes with no tie-in contracts. Ask us for a price on your exact vehicle.
Getting your tracker fitted right in Kent
Insurers usually require professional, Thatcham-accredited installation and a live subscription. Self installation or a non-Thatcham installation can void your insurance. So the fit matters as much as the device.
We are a family-run vehicle security specialists since 1991. Our team fits S5 and S7 trackers across Kent and the South East. We come to your home or workplace, with over 335 five-star Google reviews behind us.
Our 24/7 tech team is UK-based, with no call centres. You also get no tie-in fleet contracts. That keeps your security simple and your support local.
The bottom line on S5 vs S7
Pick an S7 for solid, insurance-approved theft recovery on most vehicles. Choose an S5 when you own a high-value car or your insurer requires ADR. Always check your policy wording before you buy.
Not sure which category your insurer needs? Send us your policy wording and vehicle details for a quick answer. Call 0330 010 0506 or get a quote today, and we will fit it across Kent.
Which Thatcham category does your insurer ask for? Tell us and we will decode it for you.
