If I was having that much of my car painted then I'd have the entire car resprayed. It would bug me to look at fresh paint on the rear and 'old' paint with its blemishes and wear everywhere else.
Apart from the blemishes on the rear, the paint is perfect, car has only done 14K miles from new.
I think they will all require the rear end repainting eventually due to poor assembly when new, especially the rear bumper under the lights.
I don't think mine has ever seen a salty winter, I know it has lived all its life in a garage, underneath is factory fresh even though 11 years old, all the plating on the suspension and bolts all still present, but under the lights etc. if you look closely is starting to corrode.
If that's the Italia Autosport in Meltham, then I would go with their painters. I've seen some of their paintwork and it is really lovely. The owner of IA is John Pogson (the guy who took Ryan out for one of the drives of his life in an F40), he's restoring an old Lancia and the paint is fantastic so if it's the same body shop, I'd go with them. I too would go for a whole body spray job. You can save a bundle by prepping most of the body yourself, it's not rocket science!
Yes it is, they use
http://www.grangemoorcoachworks.co.uk/ although I found out indirectly then confirmed when they quoted me.
Regarding Italia Autosport I've used them to fit my larini exhaust, they are only 5 mins drive away from me.
Only problem with them for mechanical work is no SD2 equipment, so even though super convenient I'm hesitant to use them for servicing.