Airwork changed its name to British United Airways on 19 May 1960, which preceded BUA's official formation on 1 July of that year. The origins of the new name went back to United Airways, one of the three predecessors of the pre-World War II British Airways. The [re-]use of the United Airways name together with the prefix British had been agreed with shareholder Whitehall Securities, the controlling shareholder of both United Airways and Spartan Air Lines before these airlines' merger with Hillman's Airways to form the pre-war British Airways.