[Neil]

I bet not many of the "noisy exhaust club" have informed their insurance of the modification. If they have not then their insurance is void. At the last Area Council meeting I went too our local beat bobby mentioned this. He said if cars are racing around dangerously and have such modifications to inform him of the registration number. He would then pay them a visit and check they are properly insured. If not he would "do them" for no insurance. He explained that catching them driving dangerously is often difficult to prove but checking the insurance is easy and just as effective in dealing with them.