In February 1917, "Prince of Wales" was ordered to return to the United Kingdom. On her voyage home, she called at Gibraltar from 28 February 1917 to 10 March 1917 and arrived at Devonport Dockyard later in March. She was placed in reserve on arrival and used as an accommodation ship. "Prince of Wales" was placed on the disposal list on 10 November 1919, and was sold for scrap to Thos W Ward on 12 April 1920. The ship arrived at Milford Haven, Wales, to be broken up in June 1920.