EGAC
Thank you for your explanations about Cunard Eagle. That filled in a gap for me. I believe that later in the 1960s the airline that became British Eagle ordered one, maybe two, 707-320Cs, and for these Boeing revived the 65 customer number. These aircraft, I think, were not delivered because of British Eagle's bankruptch in November 1968. The airline at that time was, however, operating ex-Qantas 707-138Bs, however.
Again, my thanks to everyone else for the information. Did the 707 do a complete circuit and land in the same direction as the take-off, or did it, as I have a feeling was the case, it come round to 05 or 23...?