London Bus Tube

Its just a tube map, but it works offline and is good for a quick route check.
Tourist and visitors underground and bus maps of London, UK.

Simple subway and central London bus map.

Free app to help tourists and visitors to London.
Seems it might not work on Sony-E Experia phones (low memory).
The map is useful when no poster to look at is around. I even use it myself.

Have fun in London.