Tamplin was a right-handed batsman who played primarily as a wicket-keeper.
He made his first-class debut while on war service[1] in India for Bengal against Bihar in the 1942/43 Ranji Trophy at Eden Gardens, Calcutta.
[2] Tamplin later returned to the United Kingdom and made his first-class debut for Glamorgan against the touring South Africans in 1947.
Tamplin played 2 further first-class matches for the county in 1947, against Kent and Derbyshire.
[4] His first-class career may have lasted longer, had it not been for the presence of Haydn Davies in the Glamorgan side.