The "Fix_or_repair_daily" is in the dealer. I managed to drive it there (about 4miles) without any problems this afternoon, then had a pleasant walk home. I suppose I was suffering form the quote of 62 quid to run the diagnostic test.
They did mention the goodwill claim but it would be only 40% 'donation' due to the age of the car and the mileage.

Hell, it is only out of warranty by 8 days now and has just clocked up 40K miles. Out of the eight days it is out of warranty, the car was in a bodyshop for seven of them because some prat in a Merc tail ended me whilst I was stationary!! I can't win.