A few photos taken at London Stansted Airport in July 1973 including several former recently retired Royal Air Force Bristol Britannia's, plus Transmeridian Air Cargo (TMAC) CL-44 Guppy N447T in it's original colour scheme.
A Flying Fortress is also visible in the first photo.
I think that must be '75 at the earliest as the B-17 does look very much like Sally B in her original scheme; she arrived with Ted White at Duxford in March '75.
Pic of CL-44 G-ATZH in the "RAF" scheme is indeed as she appeared in "O Lucky Man".
I recall a TAR CL-44 LV-JTN at Gatwick in '77, delivering Aerolineas Argentina's HS-748 spares to Dan-Air who had bought AA's 748 fleet and spares inventory . The CL-44 was destroyed in a mid-air collision with a Su-15 after straying into Soviet airspace a couple of years later...