When traveling by train, it's great to have some sort of imagery to better plan your trip. In London, for example, there are 10 different rail lines that bleed out into further UK territory. Having a British rail map will show you where you need to go in a clearly marked way. When looking at the map, in the case of needing to get to , say, Bath, one would take the P line or Paddington. It's a
. very simple system and even easier with a map. Click here to see it: http://www.nationalrail.co.uk/tocs_maps/maps/OfficialNationalRailmapsmall.pdf