The first production batch of Viscounts were divided equally between BEA and Air France, odd construction numbers to BEA, even numbers to AF. The AF ones held the Paris to London route down until the arrival of the Caravelle, later supplemented by spare L-1049 Constellations on occasion.
My own last Caravelle sighting was about 1992. I was in Berlin, post-wall coming down, and had seen previously that one was still scheduled with Syrian Arab on a once-weekly Saturday Copenhagen-Berlin-Damascus run, which seemed a bit unlikely. Forgot about it, was out on the Saturday on the local S-Bahn train which passes some miles to the north of Schonefeld airport, and there it came by absolute coincidence, just gliding down finals into the field. And I did run across in the train from left to right to watch it disappear. Last one.