I may be wrong but I think there is one scene in the Dambusters which was filmed at Kirton. 2 or 3 Lancs are seen taking off - from the grass - heading west over the cliff - and it is not a long runway! Apparently everyone who was watching the takeoff from the control tower held their collective breaths, and when the aircrew were asked to do it again they politely replied in the negative - they only just made it!