These specialise in Jap cars but have dealt with vag cars,they just did a Polo with Diesel conversion pulling 220bhp and 420ft/lb of torque!
They do Brake lines which can fit VW/Audi as they are the HEL london manufacture as well,and they offer forum member discount on brake lines.
Also they do 4 wheels alignment, diagnostic, service...etc they can offer forum member 10-15% off
for further info contact member Dixon http://www.audi-sport.net/vb/member....on-Motorsports
I know they are not specialists in VAG as pointed out but they do proper racing cars so they are no cowboys (the cars on the site are worth a look)and ASN members discount so worth a call at least and mention your an Audi-Sport member