Well a week later and some significant fettling has taken place.
The common theme so far has been one of recommissioning rather than repairing or replacing. The headlights, washers and wipers didn't function because the connectors needed cleaning, all sorted if a bit fiddly. The doors are now unstuck - the 'grease' in the safety catches had gone hard and was acting more like glue, flushed out with WD40 and all working fine.
I've found a blow on the exhaust - there's a split in the rolled seam. I think its a bit too delicate for my welding skills so I'll let my classic car friendly garage man have a go. I don't think the exhaust will come off without a fight and I don't fancy shelling out £400 for a replacement if I can help it.
Its all going rather well I think.