I just picked up one of these from Model Zone in-store, although its also on-line. I had never used digital before, and wow, what a difference! Automatic acceleration is great and I have never seen loco's able to run so slowly (that's a good thing, they can go fast too).
For those interested, the steam loco is actually much better than I expected, nice quality. The 08 shunter isn't anything special, but runs smooth.
They also have the Western Pullman set with £75 off. http://www.modelzone.co.uk/gwr_western_pullman_digitaltrain_set-pc3178-details.htm