You are required to submit a renewal notice from your previous insurer. If this doesn’t state your (NCB) entitlement or if it is not given to you by the company then call your insurer and request confirmation of your (NCB). Alternatively, you can submit your previous insurance papers and declaration that you are entitled to receive (NCB). However, if you are not eligible for NCB and wrongly claimed for it then the insurance contract is void ab initio and the insurance company reserves all rights to reject your claim.
Type of car: If you have an expensive or powerful car then you are seen as a higher risk for a number of reasons. If it’s expensive, it has a higher risk of being stolen. If it’s powerful, it’s deemed more at risk of getting into an accident driving at speed. If you want to see how your car impacts your insurance, you can check which insurance group it’s in for an indication.