The GNP&BR opened the station on 15 December 1906 as "Dover Street". As with most of the other GNP&BR stations, the station building, on the east side of Dover Street, was designed by Leslie Green. It featured the company's standard red glazed terracotta facade with wide semi-circular arches at first-floor level. Platform and passageway walls were decorated in glazed cream tiles in Green's standard arrangement with margins, patterning and station names in mid-blue. When it opened, the station to the west was Down Street. The station was provided with four Otis electric lifts paired in two diameter shafts and a spiral stair in a smaller shaft. The platforms are below the level of Piccadilly.