After hostilities with Egypt commenced, the resulting international outrage caused Prime Minister Sidney Holland to reverse his support for the British - calling for Captain Peter Phipps to withdraw from operations against Egypt. At that point the only other immediately available replacement cruiser was HMS "Jamaica", a surface fighting unit without modern AA systems or the equipment to process air-warning radar data and "multiple communication channels" with Fleet Air Arm aircraft. "Royalist" continued for some time as the primary coastal AD ship - possibly for 24 hours - until HMS "Ceylon" transferred from shore bombardment duty off Port Said and the risk from Egypt's Gloster Meteors, MiGs and Badger bombers was suppressed. After about a day, HMNZS "Royalist" also withdrew from a scheduled bombardment mission in support of a RN destroyer squadron, moved further offshore away from the main body of the RN fleet (changing identity to the undefined, RNZN cruiser "Black Swan" according to some British published accounts) continuing to assist the RN fleet in its primary passive soft air warning and communications role.