 He served as Governor of Dumbarton Castle from 1807 to 1810 and as Lieutenant of the Tower of London from 1810, and from 1821, Colonel of the 2nd Dragoon Guards (Queen's Bays) until his death.. 

Loftus died peacefully at his house in Wimpole Street on the 15th of July, 1831 and was buried eight days later alongside his second wife Lady Elizabeth Loftus in the Townshend family vault at Raynham Hall.Loftus embarked for Boston from Cork on April 10, 1775 and arrived at a city under siege by local militia on the 24th of May.Three weeks later, Loftus, a cavalry Cornet, volunteered to dismount for his first military action at Bunker Hill  overlooking the city, under the command of General Sir William Howe, who on this occasion, was pleased to give him the rank of Lieutenant.