The Thatcham Vehicle Security Categories

Thatcham have defined a number of categories for vehicle security devices ranging from combined Alarms and Immobilisers through to After Theft Tracking Systems and TQA for aftermarket Vehicle Security Devices. In each category, third party security products have been evaluated against "The British Insurance Industry's Criteria for Vehicle Security", using specific tests to indicate the effectiveness of the product. The product listing is updated as and when new security systems are judged to have successfully complied with the Criteria. Each product is subject to a review after 12 months.

In order to make the task of searching simpler, the full listing has been split up into individual categories. Clicking on the links below will give a fuller explanation of the types of products contained within each category, as well as an indication of the kinds of tests carried out and the full, current compliant system listing within each.

The familiar 'Full Category Listing' document including all the special notes can also still be accessed using the appropriate link below.

• Electronic Alarm and Immobiliser - Category 1
• Electronic/Electromechanical Immobiliser - Category 2
• Electronic Alarm Upgrade [General Application] - Category 2-1
• Mechanical Immobiliser - Category 3
• Wheel Locking Devices - - Category 4
• After-Theft Systems for Vehicle Recovery - Category 5
• Full Category Listing