The station was built in two stages. The Northern Line station opened on 18 December 1890 as part of the first deep-level tube, the City & South London Railway (C&SLR). The Baker Street & Waterloo Railway (BS&WR) station opened on 5 August 1906, five months after the rest of the line. Although belonging to separate companies, the platforms were connected below ground from 10 August 1906.
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