[1] Batuwantudawe was called to the bar in 1932 at the Middle Temple, as such on 4 August 1932 he was admitted and enrolled as an Advocate of the Supreme Court of Ceylon.
On 19 June 1936 Batuwantudawe, together with his brother, were convicted of cheating, forgery and impersonation for which he served six months imprisonment.
[3][4] He was a member of the executive committee on Local Administration[5] until the State Council was abolished in July 1947.
At the 1st parliamentary election, held between 23 August 1947 and 20 September 1947, Batuwantudawe contested the Kalutara electorate, representing the United National Party.
He was defeated by the Lanka Sama Samaja Party candidate, Cholomondeley Goonewardene, by 1,970 votes.