Comment Re:Meh. (Score 5, Informative) 59
And these pictures show the phenomena on a larger scale... sometimes it's interesting to look at the forest as well as the trees.
Actually Transport for London, which includes bus, bike, foot, boat, and other options for getting around the London area. The TFL Journey Planner is a fantastic resource.
It has been mentioned elsewhere, but I'll repeat the advice: get an Oyster card when you arrive. It's faster and cheaper than other ways to pay.
Whenever a system becomes completely defined, some damn fool discovers something which either abolishes the system or expands it beyond recognition.