Blackburn 135, CBV435, a Guy Arab III with Crossley H30/26R body, one of twenty new in 1949, photographed in its last year in service.
When this photo was taken it must have been one of the last Crossley bodied buses in service across the country.
Click here for history and a lot more pictures of Blackburn Corporation trams and buses.

Photo taken by John Kaye, Monday 17 April 1972, Blackburn