[1][2] Both systems commenced operations on 20 June 1911.

[1][2] However, the public service on the Bradford system did not start until four days later.

[2] Having been one of the first two such systems to open, it was also the last one to close, on 26 March 1972.

[1] Just before its closure, it was also the longest-lived surviving trolleybus system in the world, but with the Bradford closure that distinction passed to the Shanghai, China, trolleybus system, opened in 1914.

[3] Many of the former Bradford trolleybuses are now preserved at various locations around the UK, including eleven of them at the Trolleybus Museum at Sandtoft, Lincolnshire.