I forgot to say, when it comes to security, it is not about relying on 1 thing, for the best security you need to combine options to protect yourself.
For instance, over the years people think Trackers are fool proof... if my car gets nicked i am guaranteed to get it back. Well its not the case, its a 50/50 gamble. If a rookie takes it then there is a good chance of you getting a signal, but if a pro takes it, they come prepared and block your trackers signal.
£30 is all they need.
Don't get me wrong, its worth fitting a tracker, but i would look at the cheaper tracker options shown above than going to one of the big companies with ridiculously high premiums that might not even get a signal when you need it
Just my opinion lol