The Cotswold Motor Boat Racing Club was based in Fairford, Gloucestershire and formed in the late 1950s.
The above sketch of the circuit is taken from the book Powerboat Racing by Bill Shakespeare.
The article below is from the 1975 GKN World Powerboat Championship Programme, followed by the Advance Regulations for the 1979 Champion of Champions event, with amendments by Charlie Sheppard.
Embassy Gold Cup 1980. Video in 3 parts clockwise from top left.