I've just joined Trainorders.com, a US railfan site with lots of useful railroad resources. One posting pointed me to this site which contains realtime movements of Amtrak's western railroad services. These are the really long distance routes that take days to complete and can be hours behind schedule. However, a quick look suggests that Amtrak is doing quite well today, no doubt because there are fewer freight trains running during the recession. (An estimate 200,000 freight cars are currently idle).
I wonder if there are similar sites catering to UK railfans (anoraks)?