Green is the District Line
The Circle Line.
On the London Underground map, the Circle Line is coloured yellow.
Hammersmith and City
Northern line, with 206,734,000 passengers per year.
The Metropolitan Underground Railway opened in 1863.
The London Underground (commonly called the Tube) is a conventional underground railway (Métro) in London. It has 11 lines which run Underground through the centre of London.The Underground serves 270 stations and has 402 Km of track, 45 per cent of which is undergroundIt incorporates the oldest section of underground railway in the world, which opened in 1863; and the first line to operate electric trains, in 1890.The Docklands Light Railway (or DLR) is a physically separate system first opened in 1987. It has 45 stations and 34 km of track.It was built as a low-cost, low-capacity link to the Docklands redevelopment area. It has since expanded, and become a higher capacity system of many lines which serves East London.It is an automatic driver-less system. The DLR runs mostly on elevated tracks, but the one line that goes into central London is underground.There is also a tram system in south London, centered on Croydon.
On the London Underground map, the Circle Line is coloured yellow.
Hammersmith & City line
Green is the District Line
Y The Piccadilly Line
The Piccadilly line in the London underground is dark blue.
The Circle line is yellow.
Take the London Underground - the Piccadilly line operates from the underground station at terminal 3 directly to Green Park underground station, the journey takes around 45 minutes.
The London Underground did give the East London line to the London Overground to ease its traffic.
Central Line
Take the Underground (tube) to Victoria and then the Overground (main line) to Eastbourne.
The Circle Line Unfortunately this answer is wrong! According to Transport for London the only tube line to connect all London Underground lines is the Jubilee Line.
You need to get the Northern Line to Leicester Square and then the Piccadilly Line to London Waterloo.