sentences: "The first Civil Air Ensign to be flown in London was hoisted by The Hon Mrs Victor Bruce, the noted British woman aviator.The 1931 Order was revoked by The Civil Air Ensign Order made by His Majesty in Council on 18 March 1937 additionally permitting the use of the flag on buildings used by the Ministry of Civil Aviation or air transport undertakings, on vehicles used personally by the Minister and by any person given special permission by the Minister.