Notes: The Watford and Rickmansworth Railway Company was incorporated on July 3, 1860, to build a railway from Watford Junction to Rickmansworth, a distance of four-and-a-half miles.

The railway opened on October 1, 1862, with one intermediate station at Watford High Street. The line carried some local traffic as well as serving both interchange sidings for the Grand Union Canal and various private sidings along the way. It was not financially successful, and was taken over by the LNWR in 1881.

In 1887 the line boasted 15 daily services from Rickmansworth to Watford, and 16 in the reverse direction. Two services in each direction were through trains to or from London Euston, via Watford Junction.

In about 1907 the LNWR proposed the construction of new local lines known as the "New Lines", to Watford Junction. As originally planned a new line from Euston would have run parallel to the main line to Bushey, where it would diverge to the west to meet the Rickmansworth branch just south of Watford High Street.

Cost-cutting forced a simplification of the proposals and a new branch to Croxley Green was built with a triangular junction allowing both Croxley and Rickmansworth to have a direct service to London. Although the 'New Lines' were electrified from the start the two branches retained their steam services, only being converted later. The line to Rickmansworth

Rickmansworth station was renamed Rickmansworth Church Street on September 25, 1950 but 18 months later the branch closed to passenger traffic on March 3rd 1952; now that nationalisation brought lines into common ownership, it duplicated the Metropolitan Line without good reason. Freight facilities continued until January 1967 when it was cut back to the Good Year Tyre siding.