While the BHR currently operates the ex-British Gas shunter (Known as ‘The Bug’), this isn’t the first Ruston & Hornsby Diesel to have worked on the docks railways in Bristol.
In July 1952, just over the water at the Bristol Gas Company’s works at Canon’s Marsh (Now the site of luxury new build and re-build flats), a 4-wheel diesel mechanical shunter is at work.

An unidentified 4 wheel diesel mechanical built by Ruston, potters around the Bristol Gas Company’s works at Canon’s Marsh, note Bristol’s famous Cabot Tower on the skyline. 7/52. ©www.railphotoprints.co.uk – collection

This photo is reposted from Rail Photoprints and can be purchased at this link.