Just to update this thread.
Finally pulled my finger out and got the coupe booked in for a belt change with MDZ and I was really, really impressed with them.
Top job, they identifed the timing was out (previous belt change was done by mariking up the pullies, not with the 'cam locking blocks' even showed me pics he'd take during the change, along with the old parts). Also picked up the rocket cover was weaping oil (and the source of my ever growing oil 'foot print' on the drive!).
Runs soooooo much better now, and the final smile was the price, very, very reasonable - not your typicaly Surrey prices!
I will be going back to tghem for the MOT and a few other bits that are outstanding!
PS - they also do non-italian cars, there was a rather tasty Mk.2 Escort having an engine rebuild in when I collected the coupe!
@ Mod - you can close this thread now if you like