 Milford Haven was appointed Military Knight Grand Cross of the Order of the Bath (GCB), to add to the Civil one he already held, in recognition of his service to the Royal Navy in the 1921 New Year Honours, and was specially promoted by Order in Council to the rank of Admiral of the Fleet on the Retired List, dated 19 August. A few days later he joined HMS Repulse, the ship on which his son Louis was serving, for a week at the invitation of the captain Dudley Pound. It was his last voyage; he died at 42 Half Moon Street, Piccadilly, London in the annexe of the Naval and Military Club on 11 September 1921 of heart failure following influenza. After a funeral service at Westminster Abbey, his remains were buried at St. Mildred's Church, Whippingham, on the Isle of Wight.
