I disagree. The background (in the distance) is all wrong for 'round the back' at Luton and there is a nose of another BAC 1-11 on the left of the shot. I don't recall there being enough depth round there for an aircraft in that position. Besides, G-ATPL was sold abroad to Chile in the 90s, it wasn't broken up so I cannot think why it would be pushed 'round the back'.