In July 1903 a route to Rosegrove opened, and in February 1904 to Towneley Park and Summit.

The company amassed a fleet of 72 vehicles: On 21 December 1923 a coal lorry collided with a tram No 10 on Briercliffe Road.

The tramcar derailed and crashed into a house and shop on the corner of Sedbergh St.

The conductor, William Simpson, and a 14-year-old schoolgirl, Ethel Pomfret were killed.

Burnley, Nelson and Colne became a combined transport undertaking on 1 April 1933.