i reckon it could be anywhere between 400 and 600 based on my last service.
However it could be a bit more if you need brake pads and if you need rockers etc.
For servicing in the midlands you could either go to JHP (Ducati Coventry) or to Cornerspeed - Nelly on the board. Both are highly praised and very helpful.
Look no further than Cornerspeed. Top place, run by a top DSC member. Recommended by loads of people on this board for quality of work at a fair price.
I have a X-plate 2000 748s, 5750miles and have it booked for its first 6000 mile service with Cornerspeed in April. I think they said its about £450 with belts. Hoping that's it because thats all I've got (you listening chaps).