DuxDeluxe
LIFE MEMBER
Yes - had to increase the annual mileage on one of my cars to keep the right side and Aviva simply said "thanks, noted and no charge" with policy amended accordingly.Safeguard do not have a mileage limit so therefore they don't ask the question! Other insurers do as you have found out ... if you underestimate and have to make a claim in effect it gives them a get out clause to not pay.
Remember you are entering into a contract with them when you take out insurance and saying you'll do no more than X amount of miles so if you go over that you are in breach of contract. They use the mileage to assess the risk and thereby set the premium accordingly.
Not sure how they check in case of an accident unless they access the mileages given at each MOT, but don't think it is a risk worth taking
Edit - just realised how old the thread is. Still relevant, though