After attending the Merchant Taylors' School in 1881 he was offered a scholarship to St John's College, Oxford, where he gained a first in classics and literature.
In 1891 he was called to the Bar by Lincoln's Inn, and thanks to his association with his uncle, Henry Buckley, he gained a large practice extremely early.
Acting as editor of the seventh and eighth editions of Buckley's Company Law, Clauson was made King's Counsel in 1910.
[1] In 1926 Clauson was made a judge of the Chancery Division of the High Court of Justice, receiving the customary knighthood.
After twelve years on the bench he was sworn in as a Lord Justice of Appeal in 1936 and made a Privy Councillor, but retired in 1942.