Here
https://www.youtube.com/watch?v=iq4NkrHD_GE
Looks like they've superimposed the Duxford VC-10 in BOAC livery with everyone getting off it (and they have all the BOAC ground equipment) on the background.
The aircraft steps have the BOAC logo from an earlier era's font than the aircraft livery
. I know this sort of comment dismays the producers, who want all attention on the actors...