 Uthwatt was nominated a Judge of the Chancery Division of the High Court of Justice in 1941 and subsequently created a Knight Bachelor.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.Following his appointment, he was sworn of the Privy Council in February of the same year.