On 29 April 1916, the 3rd Battle Squadron was rebased at Sheerness, and on 3 May 1916 it was separated from the Grand Fleet, being transferred to the Nore Command. "Dominion" remained there with the squadron until March 1918, being attacked unsuccessfully by a German submarine in May 1916 and undergoing a refit at Portsmouth Dockyard in June 1917. The units of the 3rd Battle Squadron had begun to disperse gradually in 1916, and by 1 March 1918, "Dominion" and battleship were the only ships left in the squadron. The squadron was finally dissolved in March 1918, and "Dominion" paid off to serve as a barracks ship for the Zeebrugge Raid and the First Ostend Raid; she joined "Hindustan" and was used to house the crews for the ships involved in the operations while the men trained. She served in this capacity, stationed in the Swin, until early May. On 2 May, "Dominion" was transferred into the Nore Reserve. She was employed as an accommodation ship. On 29 May 1919, "Dominion" was placed on the disposal list at Chatham Dockyard. She was sold for scrapping on 9 May 1921 to Thos W Ward. On 30 September 1923 she was towed to Belfast to be stripped, and she arrived at Preston for scrapping on 28 October 1924.