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

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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 solid red line shows the trolleybus routes and dotted red routes are the tram lines which ran mainly south of the River Thames. Click on the map to ... to Hanwell, west London,on June 15 ...