An additional map of the London Underground network is included.
And a map of london underground stations that are nearby - the map updates as you move around London, so you will always know where your nearest london tube station is.
https://play.google.com/store/apps/details?id=com.appandmobile.nextlondontube.holo
Next London Tube is FREE ....
Live London Tube Tracker.
Real-time train departure board for London Underground stations.
