Platforms 1 and 4 at Aldgate are two of the only three platforms on the network to be served exclusively by the Circle Line (the other being Platform 2 at Gloucester Road). All other Circle Line platforms are shared by the District, Metropolitan and/or Hammersmith & City Lines.
In literature
Aldgate tube station is important in Sir Arthur Conan Doyle's Sherlock Holmes story The Adventure of the Bruce-Partington Plans.
In the story, Cadogan West is found dead on the tracks near the station. We later know that the body was placed on top of the train before its arrival at the station.
Butt, R.V.J. (October 1995). The Directory of Railway Stations: details every public and private passenger station, halt, platform and stopping place, past and present (1st ed.). Sparkford: Patrick Stephens Ltd. ISBN1-8526-0508-1. OCLC60251199.