Former Eastern National 304 and originally with Westcliff-on-Sea, EJN640, was a Bristol LS6G built 1952/3 with ECW C39F bodywork.
This seems to have been quite well travelled, going to Western National as 3811 before reaching Primrose Valley of Filey. The owner when photographed was not identified.
Photo taken by Donald Hudson, April 1973, Coulby Newham, Middlesbrough