The London public transport system is for the leisure visitor, one of its great assets and opportunities. An organisation called Transport for London coordinates the various transport options on offer; namely buses, underground railway, overground railway, Docklands light railway, and river transport. This network covers the whole Greater London area with a comprehensive network of services. The only airports within this area are Heathrow and London City Airports.

The area is organised in six circular zones which ripple out from the centre. Nearly all the places visitors want to travel to and nearly all hotel accommodation is in Zones 1 and 2, though Heathrow is in Zone 6. For the sake of simplicity we will focus on this inner area, zones 1 and 2. Public transport here is dominated by the London Underground and London