If you use the search thingy you may be lucky, or unlucky enough to find my last post on Aylesbury following my 600 mile service.
I must agree with just about everything said so far. Not that bothered if you buy from them or not and the after sales service is IMO very poor.
Since that experience my bike has being lovingly looked after by Ducati Wolverhampton including the fitment of the Termi system over the winter. Quite glad actually. Had major problems with the S4R starting from when I picked it up. Only when Ducati Wolves had it in did they find the butterflies weren't set up properly.... Aylesbury had PDI'd and serviced it
Personally I would shop around. I've heard some very good reports about Riders, JHP and Ducati Leeds...... or you could call Tony at Ducati Wolves.