Your insurance premium is based, in part, upon your 'insurance score' which, just like a credit score, is an indicator of risk.
Historical data shows that there's a clear correlation between credit ratings and insurance claims. (i.e. people with poor credit ratings tend to submit a greater number of insurance claims).
If you've got a
good credit score it's actually in your interest for a search to be carried out, as you're then likely to be offered a significantly lower premium than your next door neighbour who is insuring his house for just the same amount as you but who has a lousy credit rating.
This link goes to a US website but the key information is just as valid here:
http://www.insurancescored.com/