Great information Hugh, opens my eyes a bit more on my late fathers flying as he would have been accompanying F/L Hankins on these flights. Although the Citation puts him as communication pilot from October 1941 as I replied earlier to Simon my father paired with him from 14th August 1941 as a private crew for ACM Sir W.Mitchell within Station Flight Abbotsinch flying virtually daily until June 1942 and often till October 1942 when he is shown in my fathers log book as becoming Squadron Leader.