Interesting to see Charles Brown's photograph of the 257 Squadron Pilots. I think Flt Lt Ball was Geoff Ball who was subsequently shot down on 19th August 1943 and evaded capture for a couple of weeks. I came to know him when he was flying Vikings with Autair in the 1960s. I remember seeing him at that time with his family, friends and Vintage Motor at an Old Warden Flying Display tucking into a vast picnic washed down with plenty of booze. Happy Days !