Daz aka Darth Loo-Knee from this forum did an excellent job with mine last year circa Jan 2014 and included the water pump as well - I`m based in N Lincs so you are a fair way further up North, and the mileage charge becomes an extra consideration, but your quote seems reasonable.Previously , My first cambelt change was done by a local garage in 2008 but was ok and functional but not as precise and exacting as the job entails.If you can get one of this forums mobile mechanics to do it I`m of the opinion they`ll do an excellent job and well worth the price.I also found it useful to purchase the OOF dvd for reference purposes, and this dvd came in useful when I removed and refurbished the alternator last year which saved me a few bob, and prompted me to do more myself on my omegas