Originally Posted by
boeing_eng
There was a Sterling invasion at LTN particularly on Sundays in the late 70's (as CJ has already mentioned a few pages back)
A lot of pages back, actually! (starts page 37).
Sterling switched 4 flights a week to Luton in April 1976. all Caravelles. Summer 1977 saw around 10 flights per week of which 6 were on a Sunday, including the first 727 flight Sun evening. Summer 1978 programme below (local times), with a 727 and 2 Caravelles on the ground at the same time on Sunday mornings. I suspect the photo above dates from then - definitely morning from the angle of the sun.