The footage was taken from Lancaster PD329 JO-Y of 463 Sqn, RAF Waddington, flown by Flt Lt Bruce Buckham. 463 Sqn hosted the 5 Group Photographic Film Unit and possessed 3 modified Lancasters with extra filming positions. Some brave cameramen went along to film many of the daylight raids (and some night ones) during the war, and much of the airborne film seen today about Lancaster bombing raids was taken by these Waddington crews.
One of the filming pilots was Flt Lt Tottenham whose name appears on an engine nacelle of PO-S in the RAF Museum at Hendon. He was killed on 26 September 1944 while on a photographic mission on a daylight raid over German gun positions near Calais in support of attacking ground units. Having just completed his first tour on 467 Sqn (where he was one of "Sugar's" regular pilots) he was flying his second mission of his second tour when he and his crew died. This mission was not recorded in the 463 Sqn F541 (Tottenham's aircraft is often erroneously listed as lost during a raid on Karlesruhr).