In 1460 at Calais, then belonging to the English crown, he was taken prisoner by the Earl of Warwick whilst on a military expedition during the Wars of the Roses.

He was joint commander of the Army and held the office of Master of the King's Dogs in 1471.

He was present when King Edward bestowed the title of Earl of Winchester upon Louis Seigneur de la Gruthuyse in 1472.

[4] Richard III appointed him Lord High Treasurer in December 1484, in succession to Sir John Wood.

[6] He was succeeded by his eldest son, Sir James Tuchet, 7th Baron Audley (1463–1497).