As for preservation, there is a slight conflict for Pacers. One has to ask, is their railway preserving the story of UK rail, or is it preserving the rail era that ended in 1968? Interesting point Chris but this discussion is just a symptom of times moving on. I can remember the same discussion as to whether BR Standards should be preserved or not, then it was diesels and dmus, then there was a discussion as to whether anything should ever be painted blue in preservation and so on. We will see Pacers preserved, and in time Sprinters and Voyagers, just as we now are seeing an HST. If you grow up loving 66s then that's what you'll want to see preserved when you get older. Railway preservation is only now stuck in the "BR black/steam to diesel transition" era because that's what the majority of heritage volunteers remember from their youth but there is now much more of an emphasis on the BR blue period than there was even 10 years ago which is a sign that those from that era are now more prominent than they were. 25 years ago I took part on an almost identical debate as to whether 1st-gen DMUs should be preserved and look where we are now!