Thanks to Criagyb for his this.
The price was great, the service was great and the unit is just brilliant.
I had a standard single DIN Chorus head unit originally, Craig changed the dash cage to a double DIN, then very skillfuly re-sculptured the heater controls and the dash to fit in the RNS-E unit.
So I now have great satnav, MP3 playback off the SD cards, the use of my 6 disk glove box changer and bluetooth hands free too.
A couple of pics below but more pictures can be found at http://www.oktohost.com/RNS-E
Craig was telling me he is now attracting people from as far as Italy and I can see why, what a 1st class service.
Sorry about the low picture quality, taken with my mobile.
<font color="red"> I read in the latest issue of "Audi Driver" that the RAC trafficmaster system is now linked to the TMC for all A8 and A6 MMI units, so Craig can you see if this can be hooked up to the RNS-E install? </font>