Some while ago there was mention of Argosy aircraft at Luton. Here's a scratchy shot of G-ASXP on the apron. The aircraft was delivered to BEA in June 1965 and destroyed at Stansted in December 1967 so giving some clue as to the date at Luton. I've no idea who took the photo but it was in the collection of Eddie Papps (formerly of Britannia)
Excellent website here for Argosy fans
AWA ARGOSY