I've just started looking at this myself; I had a loan a fair few years ago (but still within time) and two credit cards which also had it (also both paid off a few years ago).
Checking old statements I had some form of insurance or another on each of them. I think there's a few £k there between the three.
On that basis, and given the amount of information freely available on the web including sample letters etc, I'm going after this myself. Assuming there's £4k on the table I'll be f*cked if I'm going to give away 25% of that (plus the vodka and tonic) to a company sending the very same letters that I can. That £1,200 is a good chunk against a new watch, right?!
Gone but not forgotten:
325i M Sport (E92), Black Sapphire, Coral Red Dakota, 19" 225's, Seat Heating, 6FL and de-badge
Replaced by 6.2 litres of AMG powered C class.