It arrived (a bit too quickly really, lol... £85 new though, bargain I thought):
Now, has anyone fitted one of these? I've had a quick read up, and it seems to be:
Remove battery / battery tray / engine cover, put a stick on the brake pedal, remove old unit, split (in clean enviroment), fit new section, refit, bleed brakes furthest away first, ideally ABS purge with VCDS, refit other bits, remove stick...