In 2005 , one of four suicide bombers involved in the 7 July terrorist attacks detonated a device on a C-stock Circle line train from Liverpool Street and was approaching Aldgate . Seven passengers were killed in the bombing . Of the stations affected by the bombings , Aldgate was the first to be reopened , once police had handed back control of the site to London Underground following an extensive search for evidence . Once the damaged tunnel was repaired by Metronet engineers , the lines were reopened . This also allowed the Metropolitan line to be fully restored , since the closure had meant all trains had to be terminated two stations early , at Moorgate
7 July terrorist attacks
7 July 2005 London bombings
Aldgate tube station