Despite being out of my modelling era (which is 1980s), I've just bought a Grand Central HST. I really like the livery and a mate works for them, so I figure rule 1 applies.
Incidentally, I've ordered the 2 coaches to go with it, one of which is #42401, according to the retailer where I've ordered it from. Whilst these coaches haven't arrived yet (therefore there could be a problem with the item description), the standard class coach in the book set is definitely numbered 42401 so I think there might be a problem here.
Oh, and here's a picture of the real thing with what looks like gold doors.