A frequent choice for governmental inquiries, he is also remembered for proposing the creation of the eponymous juryless Diplock courts.
He was educated at Whitgift School in Croydon and University College, Oxford, where he read chemistry and graduated with a second-class degree in 1929.
In 1939, he left legal practice for serve in the Second World War; in 1941, he joined the Royal Air Force, in which he reached the rank of squadron leader.
Assigned to the Queen's Bench Division, he was appointed President of the Restrictive Practices Court in January 1961.
[6] In September 1985, Lord Diplock sat as a judge for the last time, in a special sitting of the Judicial Committee of the Privy Council during the Long Vacation for an urgent civil case from Trinidad and Tobago.
[8] His rulings, especially those on administrative law, are often considered as authoritative not only in England but across the Commonwealth and even in the United States, where he has been cited by the Supreme Court.