Bath Services 2215, CHW51, was an ex Bristol Tramways 1936 Bristol JNW that was fitted with a Gardner 5LW engine in November 1938 making it effectively a JO5G. It was rebodied with a Bristol B33D in March 1950 and was transferred to Bath Tramways in April 1952.
It is seen here at Old Bridge Bath on its way to Paulton in March 1956, the month before it was transferred back to the parent fleet for Country Services. CHW51 has appeared on sct61 before when it was with Says of Gloucester where you will find much more discussion about it here.
There is discussion on what Roger called 'Old Bridge' here and here.

Photo taken by Jim Whiteway (the late Roger Janes Collection), March 1956, Old Bridge, Bath

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