 In addition the board sold a range of other gas-making by-products such as tar, pitch, benzole, ammonia and other refined chemicals

Although named North Thames the gas board supplied gas to several areas south of the river Thames, including the Richmond, Chertsey, Ascot, Bracknell and Maidenhead areas.Town gas had traditionally been produced by carbonising (roasting) coal.The majority of gas made by the North Thames Gas Board in 1949 still used this method.