Waterloo Station's Burger King now sells beer. There are a few rules though - you can't get it to go with your cheeseburger and fries combo, and it's only on sale till 8pm. However it is available from 11am, so one could, in theory, get hammered here throughout the way before or after a train journey. We'd never suggest such a thing though. We're a responsible, informative outlet after all.