He joined Dorset in 1935, who he played for up to 1939, and then after the Second World War in 1946. Playing Minor counties cricket for Dorset allowed him to play for the Minor Counties cricket team, who he represented in 2 first-class match in 1937: against Ireland and Oxford University. Overall, Carnegie-Brown played 4 first-class matches, although with little success. He scored 78 runs at an average of 11.14, with a high score of 32. He finished his county cricket career in 1947, playing 4 Minor Counties Championship matches for Lincolnshire.
