This place is amazing (North London) picks your car up and drops it back off (for free) likes to explain everything in detail and isn't talking bull like I know other garages do and have done to me.
Patrick like to speak to all his customers face to face and very reassuring and great guy and goes out his way to do thing's for you, worked for Audi for years so you know you can trust him with your car, fully competent, 10/10 for customer service and the work that he's done.
He's genuine and doesn't try to get money out of you, (he told me to research things on Google and forums and see if I can do bit's myself to save some money)
http://www.automotivecomponentsspecialist.com/
020 3532 1275