I recommend doing the insurance bit via europa consultants (google em). That way, as its third party and done solely throught the other parties insurance, it will not affect your insurance. Also, they give you a hire car similar to your own (ie a sports car) whilst the repairs take place. On VX220.org, where parking dings mean £1000's because of the grp, europa consultants are used all the time, with thumbs up on every occasion. You won't have to do any chasing, they will sort everything out for you, and its all paid for by the other party's insurance. He will think again about not leaving a note next time when he sees how much it costs to hire a Golf GTi MkV for a month!