Got mine done at Quattro-Tech. It took them a bit longer than expected as they found the engine had already been touched in that area and was missing several bolts and washers. Bit worrying, but the engine is still going fine so good to know that's been sorted now.
Overall £800 all in for labour plus timing chain, tensioner, guides, gasket, timing case, sealant and all the extra bolts (9 in total).
I really like Quattro-Tech. Lucky to have them in my new home town!