Upon her arrival at Devonport on 23 April, "Temeraire" was reduced to reserve as she was thoroughly obsolete in comparison to the latest dreadnoughts. Five months later, to the day, she recommissioned as a cadet training ship and began her first training cruise to the Mediterranean on 8 October. Upon her arrival at Portsmouth on 11 April 1921, the ship was relieved of her duty and she sailed for Rosyth, Scotland, four days later to be listed for disposal. She was sold to the Stanlee Shipbreaking & Salvage Co. for scrap in late 1921 and was towed to Dover for demolition in February 1922.