Resuming operations on 28 September, "Duchess" sailed to Scottish waters for exercises: first anti-submarine and torpedo firing training off Clyde, then plane guard duties near Rosyth while "Eagle"s aircraft practiced high-altitude intercepts. After a visit to Hamburg, the destroyer returned to Portland. Exercises and port visits continued into 1956, and on 21 February, "Duchess" paid off and recommissioned at Portsmouth Dockyard. On 3 March, the destroyer sailed to rejoin the Mediterranean Fleet. After a series of working up exercises, "Duchess" participated in the 60-ship Exercise Medflex Dragon in April. During the exercise, the naval correspondent for "The Daily Telegraph" was convinced by the officers to place a small article in the paper jokingly asking for "any spare coronets" to decorate the wardroom with. In response, Anne, Duchess of Westminster, arranged to have her coronet supplied to the destroyer. Medflex Dragon concluded on 20 April, and "Duchess" underwent six weeks of maintenance. Port visits to Istanbul and Golcuck followed, along with a stint patrolling the Cyprus coastline to intercept Greek weapons smugglers. She returned to Malta in mid-July, and was in Grand Harbour when the Suez Canal was claimed and nationalised by Egypt.