in my job i get asked the question all the time,
Where car i take my car to be repaired, and who's qualified to carryout the repairs.?
this link will tell you who has the ATA Automotive Technicians Accreditation.
you would visit a doctor who is not qualified would you? So why let our beloved mk4's suffer lol....
http://www.automotivetechnician.org.uk/consumers-motorists/index.htmlHope this is something you find useful..
Merry Christmas and a Happy New Years......