After nearly falling over when told how much my 6K service had cost at Ducati London South, I decided to look around for an alternative for the 12K one. Step forward In Moto in Croydon (020 8689 2341). They only needed a week's notice, they showed me all the old parts that had been replaced and apologised that they had to use authentic Ducati chain and sprockets as they couldn't get any aftermarket ones.
Also worth a visit just to check out the fanastic selection of "proper" old bikes they have for sale.
http://www.inmoto.com/
Duncan