Born in Ballarat, Victoria, he was the son of Thomas Andrewes Uthwatt and his wife Annie Hazlitt.

[3] He went to Balliol College, Oxford in 1901, where he graduated with a Bachelor of Civil Law, receiving the Vinerian Scholarship.

[3] He was junior counsel to HM Treasury, the Board of Trade and the Attorney General for England and Wales in 1934.

[2] Uthwatt was nominated a Judge of the Chancery Division of the High Court of Justice in 1941 and subsequently created a Knight Bachelor.

[4] On 9 January 1946, he was appointed a Lord of Appeal in Ordinary and received thereby additionally a life peerage with the title Baron Uthwatt, of Lathbury, in the County of Buckingham.