Angel station was originally built by the
City & South London Railway (C&SLR), and opened on 17 November 1901 as the northern terminus of a new extension from
Moorgate. The station building was designed by Sydney Smith and was on the corner of
City Road and Torrens Street. On 12 May 1907, the C&SLR opened a further extension from Angel to
Euston – an arrangement still seen at
Clapham North and
Clapham Common. Access to the platforms from street level was via three Euston Anderson electric
lifts before the rebuilding of the station. When the C&SLR line was closed for tunnel reconstruction in the early 1920s to accommodate larger trains, Consequently, the station was rebuilt between 1989 and 1992. This was retained over the years but eventually it was closed on 23 January 1959 (along with the signal box at the south end of the platform) to simplify through running. The siding lay derelict and unused until the rebuilding scheme. Part of the siding was used as the northbound diversion tunnel, which branched off the existing northbound line, cut through into the end of the siding and continued along it until it branched off left to the new northbound platform. ==Design==