I have been with Insure the box for 6 years, I only drive max 4000 miles a year, 10 years NCB, no convictions, safe address on private drive etc. Last year my premium was £ 345. My renewal premium for this year is £ 1065 with no changes at all to report...an increase close to 250%... When I spoke to Chris from Insure the box he said that he did not know why himself and that (from the box in my car) all was good with my driving and that it must be (maybe) sensitive information, (maybe) re-rating on the side of the company. Needless to say that I am now insured with another company for £ 365 for the year.