The American Charles Yerkes, who was later to form the Underground Electric Railways of London, financed the needed electrification of the railway and the first electric services ran from Ealing to South Harrow in 1903.
Amerikaneren Charles Yerkes, der senere dannede Underground Electric Railways of London, finansierede den nødvendige elektrificering af jernbanen, og de første elektriske tog kørte fra Ealing til South Harrow i 1903.