This heretic prefers diesel shunters, but his (nice, fairly big when you click on the thumbnails) pictures show the track fenced off from public access.
http://www.hondawanderer.com/Class_08.htm
This appears to be all youtube stuff, I don't do flash so I haven't seen it, but it appears to be all steam trains.
http://steamontheweb.co.uk/GWR/Glouc...20Warwicks.htm
This is the homepage, notice the fencing in the (fairly small) picture:
http://steamontheweb.co.uk/