The Circle line name was not used officially until 1936 – but its existence is fundamental to the Tube’s early beginnings.

As the Tube network has evolved, so has the map by which Underground passengers ... forcing the Government and inner London businesses to step in. In 1884, to complete the Circle line, a new ...

Opening five years after the first Tube services of the Metropolitan Railway, the line was built by the Metropolitan District Railway. The tunnels were made by digging a long trench, laying track and ...

The loop was called the Inner Circle in Parliamentary ... Over the coming weeks, we’ll be using maps to tell you the story of each of London’s Tube lines. The images used in this story ...