Do police forces use information provided by car trackers?

Are trackers worth the money? Do police follow up tracker information?

Can you recommend a non-subscription vehicle tracker?

Can you suggest a reliable non-subscription vehicle tracking system please?

Why does my insurance insist I have a tracking device fitted?

I've just switched to a new insurer and in the small print it states: "We will NOT pay a claim if your car is stolen and any tracking device, which we insist is fitted, has not been set or is not in full...

What tracking device do you suggest I buy?

I am taking delivery of a new car in July. Which tracking device do you recommend I fit? Secondly, should I invest in Autoglym lifetime protection?