Greenford branch

The Greenford Branch Line is a 2 3⁄4 miles (4.4 km) Network Rail suburban railway line in west London, England. It runs northerly from a triangular junction with the Great Western Main Line west of West Ealing to a central bay platform at Greenford station which is also on the London Underground Central line. A triangular junction near Greenford connects to the New North Main Line. The line serves mainly the suburbs of Ealing and Greenford. It is one of the few remaining true branch lines in the Greater London area.

More information on the Wikipedia page