Hi Mike,
Are you a diy-er or do you just require main dealer service?
For servicing and in order to maintain service history for warranty, I use the
Motorbike Shop in Farnborough (ex-Infinity bike sales) as that's where I bought my Ten just over 1 year ago. Although trail bikes aren't the biggest sellers, after 39,000 miles they've had my bike in a few times and the same guy who PDI'd it has serviced it every time so familiarity should help keep servicing time/cost down.
Top of my list for spares (ie consumables) is
Wemoto and is a great excuse for a blast down the A283 from Milford/Godalming when you've left something to the last minute on a sunny Saturday!!
Gordan Farley (trials specialist) in Guildford is often good for the last minute diy jobs eg. rim protectors (for tyre changing) and as I found out today they sell both cable core and sheath off the roll for cable repairs or custom build.
It goes without saying though:
"May your search engine be with you"
Cheers,
Rick