I quick google reveals: http://www.photo.net/oped/mtaban/ Photography of any kind restricted rail stations in the UK, of course if you look like a happy snapper you will probably get away with it, get out a big camera and tripod and they are onto you quicker than you can set it up, more so in the larger stations where the transport police have offices. I think the restrictions are really aimed at commercial photography, but these days many people have professional looking kit, there are exception but generally you must get written permission before shooting in rail stations. As I understand it, it is an offence to use photographic equipment, although I am not sure if this is actually law or not.

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