Baker Street and Waterloo Railway Underground Electric Railways Company of London Ltd

The Baker Street and Waterloo Railway was constructed by the Underground Electric Railways Company of London Limited. The line opened in March 1906 running between Baker Street and Lambeth North, and was later extended to Elephant and Castle. The line was soon given the nickname 'Bakerloo', a contraction of Baker and Waterloo; which became so popular that the official name of the line was changed in 1906. By 1913 the line was extended to interchange with Marylebone, Paddington and Edgware Road stations.