Elephant & Castle tube station Elephant & Castle tube station Elephant & Castle is a London Underground station in the London Borough of Southwark in south London. It is on the Bank branch of the Northern line between Kennington and Borough stations, and is the southern terminus of the Bakerloo line, the next station being Lambeth North. The station is in both Travelcard Zones 1 and 2. The Northern line station was opened in 1890 by the City and South London Railway (C&SLR) while the Bakerloo line station was opened sixteen years later by the Baker Street and Waterloo Railway (BS&WR). There is out-of-station interchange
Bakerloo line at Warwick Avenue station showed "Camberwell" as a destination until the 1990s. One oddity is that, almost from its opening until 1917, the Bakerloo operated with the polarity of the conductor rails reversed, the outside rail negative and the centre rail positive. This came about because the Bakerloo shared a power source with the District Railway. On the Bakerloo, the outside conductor rail tended to leak to the tunnel wall, whereas on the District Railway, the centre rail shared a similar problem. The solution was to reverse the polarity on the Bakerloo line, so that the negative rail leaked on