He is the sixth member of the Royal Family to be made a Royal Bencher, following his mother Diana and the Queen Mother.
The Times reports that William, dressed in a gown, described his activities in the past decade, including his gap year in Chile and South Africa, his service in the Household Cavalry and his current training to be an RAF search and rescue pilot.
Before sitting down to dinner with law lords, barristers and law students, William promised not to practise as a barrister “except for the odd speeding ticket”.
Lord Phillips of Worth Matravers, the senior law lord, Lord Judge, the Lord Chief Justice and Baroness Scotland, the Attorney General, were among the guests, The Times reports.
“It’s always been our desire to get Prince William and we finally succeeded yesterday.” Hilling said the Inn’s first Royal Bencher in 1861 was another royal prince, Edward, later King Edward VII.
He added that the position would give Prince William the chance to meet barristers and members of the judiciary and get a feel for how the law operated and what barristers did.