After trials with the new equipment, in late 1956, "Ceylon" was deployed to the Mediterranean where she provided long range gunfire support to suppress Egyptian shore battery emplacements at Port Said in support of the British Army and Royal Marine landings. A Communication Officer on the cruiser describes "Ceylon"s bombardment as relatively brief, as the Egyptian batteries did not return fire. Later in the operation "Ceylon" served as an air direction picket, having been withdrawn for political reasons and the cruiser "Jamaica" lacking modern air warning and aircraft direction equipment. Between 1956 and 1959 she served in the Mediterranean Fleet, Home Fleet and East of Suez.