I've not found any references regarding these guys apart from the useful 'Recommended Garages by county' thread by Ronnie.
I need the Swirl Flaps and engine breather done on my 51' 330d auto and spoke to a helpful chap called Bob. He explained that they used the new Vortex engine breather and he'd be happy to collect my car and return it on the same day with the work completed. Nice one.
I was quoted £188 and £50.52 for SF's and EB respectively; inclusive of vat. He'll also cast an eye over the rest of the car for me.
It's booked in for next Wednesday.