Originally Posted by
treadigraph
I thought that when I looked at the pic, but I actually read your comment as "a basic RAF colour scheme"!
A CL-44 (or a Britannia?) does make an appearance as an RAF aircraft in Lindsay Anderson's film "O Lucky Man", the scene could well have been filmed at Stansted. Might watch it again later on...
The aircraft in question was a Transmeridian Air Cargo (TMAC) Canadair CL-44-D4-2, G-ATZH painted in a fake RAF colour scheme and for the purpose of filming it was temporarily registered as XV196.
Here is a photo of the aircraft in question along with a Canadair CL-44-D4-6 belonging to the Argentinian cargo operator Tar Transporte Aero Rioplatense seen at London Stansted Airport on the 17 July 1972.