Kensington Olympia (KPA) to Stansted Airport (SSD) train with London Overground

London Overground is a train company based in the United Kingdom. It operates a network of suburban rail services in and around Greater London. The services run from early morning until late at night, with some lines running 24 hours a day. The trains come in a variety of types, including the Class 378 Capitalstar, Class 172 Turbostar, Class 315, Class 317, Class 508 and Class 700 Desiro City. London Overground offers a range of ticket types, including single, return, off-peak and super off-peak tickets. Onboard facilities include air-conditioning, Wi-Fi, power sockets and CCTV. The most popular routes for London Overground are from Euston to Watford Junction, from Liverpool Street to Enfield Town, and from Clapham Junction to Stratford.

The \Tube\" refers to the London Underground, a rapid transit system serving Greater London and parts of the adjacent home counties. It is operated by London Underground Limited (LUL), a wholly-owned subsidiary of Transport for London (TfL). Opened in 1863, it was the world's first underground passenger railway. The network, nicknamed \"the Tube\" due to its circular, deep-level tunnels, has 11 lines and 270 stations, covering approximately 250 miles. It carries over a billion passengers annually and is known for its iconic roundel symbol and schematic map."