This 1964 photo is of Peter Huson and mechanic George Holmes after winning the Leonard Lord Trophy in Rhodesia. As mentioned here this car was originally owned by Clive Puzey and was a Formula Junior racing car. It is also pictured here at Snetterton in 1960 in original Formula Junior trim.
This photo is care of an article by Peter Huson in a 2012 edition of 'Outpost' which is the magazine of the British South African Police. It is referred to in the article as a Yimkin Sports Racing Car.