[sarg]

In the Midlands, for servicing, though I've never used them myself, MRC Tuning in Banbury have a very good reputation

http://www.mrctuning.com/index.php/servicing/

I have used http://www.rsdlimited.com/ for servicing and MOTs, they are okay and were a big help when I had to replace my D2 steering rack a few years back. Not perfect, but okay.

For transmissions, the nearest recognised specialist is in Chester

http://www.transcentre.co.uk/

List of ZF Agents here:

http://www.zf.com/eu/content/en/grea...e_cars_uk.html

You should also read up here:

http://forum.a8parts.co.uk/showthread.php?t=24

and here:

http://forum.a8parts.co.uk/showthread.php?t=8

and here:

http://forum.a8parts.co.uk/showthread.php?t=122

and here:

http://forum.a8parts.co.uk/showthread.php?t=4060&page=5