Hi VW,

There are two ways that Insurers handle vehicle security ratings, one is to make vehicle security a pre-requisite for certain models/values of vehicle - this will mean they require at least a "cat 2, cat 2 or tracking device" depending upon the circumstances. These will be already factored into the quoted premiums & without the correct/required security (or better) they will not be offered when seeking quotations.

The second is discount based, with tiered discounts for security systems.

These will vary from Insurer to Insurer but the specialists such as Herts, Flux etc will have the pre-requisite (first option) rather than the tiered discount route.

Not what you're going to want to hear, but on the upside with that kind of vehicle it will be far easier to cover and you will receive far fewer decline's than without that type of security fitted.

Hope this helps

Kind regards

Tony