London Rail is a directorate of Transport for London (TfL), involved in the relationship with the National Rail network within London, UK. It manages non-tube rail systems in London.

London Rail manages the London Overground (LO), London Trams and Docklands Light Railway (DLR). It will also be responsible for Crossrail. As part of an internal restructure within TfL, it recently merged with the (previously separate) London Underground directorate, bringing all of London local transport services on rails under one division.

The London Overground was established in 2007 when TfL took over control of the former National Rail Silverlink franchise in 2007. It has since taken on more services through a former London Underground line and over other network rail lines. London Rail lets a concession to operate the Overground. Operation is contracted to London Overground Rail Operations (owned by MTR and DB Regio) until 2014/16.

London Trams is responsible only for the Croydon Tram known as Tramlink. Tramlink was set up in 2000 by a private finance initiative. It was bought by TfL in 2008 and has been operated by it since. London Trams has been working on proposals for other tram schemes in west and central London, however as of 2011 all are unfunded or canceled.

London ⁱ/ˈlʌndən/ is the capital city of England and the United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its founding by the Romans, who named it Londinium. London's ancient core, the City of London, largely retains its square-mile mediaeval boundaries. Since at least the 19th century, the name London has also referred to the metropolis developed around this core. The bulk of this conurbation forms the London region and the Greater London administrative area, governed by the elected Mayor of London and the London Assembly.

London is a leading global city, with strengths in the arts, commerce, education, entertainment, fashion, finance, healthcare, media, professional services, research and development, tourism and transport all contributing to its prominence. It is the world's leading financial centre alongside New York City and has the fifth-largest city GDP in the world (and the largest in Europe). London has been described as a world cultural capital. It was the world's most visited city during 2011 and London Heathrow is the world's busiest airport by number of international passengers. London's 43 universities form the largest concentration of higher education in Europe. In 2012 London will become the first city to host the modern Summer Olympic Games three times.

The Docklands Light Railway is an automated light metro or light rail system opened in 1987 to serve the redeveloped Docklands area of London. It reaches north to Stratford, south to Lewisham, west to Tower Gateway and Bank in the City of London financial district, and east to Beckton, London City Airport and Woolwich Arsenal.

This was the first automated regular train service in London. The system is not unmanned, being staffed by Serco employees on behalf of TfL. Strikes by drivers leave operation of the DLR uninterrupted. This has led to proposals to fully automate the tube, which also would increase service capacity.

The DLR is operated under a concession awarded by Transport for London to Serco Docklands Ltd, part of the Serco Group. The system is owned by DLR Limited, part of the London Rail division of Transport for London (TfL). In 2006 the DLR carried over 60 million passengers. It has been extended several times and further extensions are being planned. DLR trains are not compatible with any other rail system.