Career
He was considered a "Probable" for the 1910 Great Britain Lions tour of Australia and New Zealand, but ultimately he was not selected for the tour. He represented England in 1911 against Wales, and Australia, in 1912 against Wales, in 1913 against Wales, in 1914 against Wales. Following the 1913-1914 Northern Rugby Football Union season, Clampitt was selected to go on the 1914 Great Britain Lions tour of Australia and New Zealand, playing one Test match against New Zealand.