Late in 1939 it was decided that a third and entirely civilian ferry pool should be set up at White Waltham, near Maidenhead in Berkshire. The operations of this pool began on 15 February 1940. On 16 May 1940 RAF Maintenance Command took control through its No. 41 Group. Then, on 22 July 1941, the ATA was placed under the control of Lord Beaverbrook's Ministry of Aircraft Production (MAP). Although control shifted between organisations, administration was always carried out by staff led by Commander Gerard d’Erlanger CBE, first at British Airways Ltd, then, after the merger in 1940, at BOAC.