Three images pulled from an Agfacolor CT18 film.
The film expired in 1968 so it is likely the photographs were taken before then. CT18 is a colour film but the development process for it is now defunct. This film was developed using modern day black and white development chemistry.
The images show the unmistakable outline of a Supermarine Spitfire, a parachute regiment in action and (possibly) a de Havilland Sea Vixen jet.