Three years after the amalgamation of all of the Underground lines into one network under the London Passenger Transport Board in 1933, the Circle line name was used for the first time.

UK: Hitachi Rail has completed what it says is 'the most technically challenging milestone to date' under Transport for ...

Map showing planned central London Underground circle from 1865 (Image: TfL Corporate Archives). The two companies initially worked together, sharing the Met’s steam trains, with the aim of ...

The Circle line name was not used officially until 1936 – but its existence is fundamental to the London Underground’s early beginnings. The loop was called the Inner Circle in Parliamentary ...

The Circle line name was not used officially until 1936 – but its existence is fundamental to the London Underground’s early beginnings. The loop was called the Inner Circle in Parliamentary papers ...

This means that for much of its history, the Waterloo & City has not featured as a Tube line on the London Underground map. It was only in 1994 when it became part of the wider network – almost ...