Sorry OP, not what you wanted to hear
My Mum was in a non fault accident (rear ended whilst stationary at a roundabout).
Then when she was changing insurance companies on the website she totally innocently ticked all of "No I haven't got any points, No I haven't caused any accidents" etc boxes. The online application wouldn't work, came up with an error telling her to call. When she called the call centre person looked it up and said that it was failing because she'd ticked one of 'no accidents' boxes, and the database was saying that she'd been involved in a non-fault accident which had been claimed on the third party's policy, not hers. She confirmed this and then they bumped up the price by £100.
Even though the accident was 100% not her fault, and not a penny had been claimed for on her policy, her insurance went up by £100 as "Statistically those involved in non-fault accidents are more likely to then go and cause an accident".
She wasn't best pleased!
I'm 99% sure the figure was £100, I'll ask her when she gets in.