im not sure sorry try searchin on google or ask local train company for details n say your a train enthusiest n wanna take some amature photos or somthing (someone whos intrested in trains ). if you find out n do hop keep us updated on your travels it would be cool to hear some storys. i have always wanted to hop but uk is to small. safe hopping mate \m/
don't get on or off while the train is moving, that shit is only for the movies. you could lose an arm or leg or head. try to hop during the daytime. i know it sounds counterintuitive, but they usually have fewer watches in the yard during the day since they figure most ne'er-do-wells will try to hop at night. just keep your head down, know where the train is going, and don't panic, whatever the situation. if you get caught and confronted, don't try to play the tough guy, just run if you can, or if you can't, try to talk your way into an ass-kick off the property rather than a call to the local force.
some good footage of fright train hopping on youtube. its called brave Dave fright train hopping in america.