Recommendations for a mechanic

[Darkstar1]

Hi
This is my first post here and i'm just after recommendations for a decent mechanic. I'm based down south in Basingstoke and i'm looking to find ideally someone who is a one man band. I have previously used a specialist BMW shop that has several people working there and the quality of work varies hugely depending on who is wealding the spanners on any particular day.
Just want a place where there are maybe 2 people max who work there with a solid reputation who know the e60 and e39 M5's well.
Happy to travel as long as they are based in the South of England
Thanks
Paolo