Could I be so cheeky as to hazard a guess at either Vivid or Olyslager?
These two organisations seem to be about as big as it get's in Europe. As Paul G commented, Olyslager is Info 2000 and Vivid (apart from in the Crypon Proscan, AKA Tecnotest Refelx) aren't represented in the aftermarket in the UK.
Cheers (looking forward to an alternative to Autodata).