(BBC documentary strand, 1968-83)

Episode 196928: Jumbo (1969):
A documentary made about the Boeing 747 just before the first examples entered service includes a sequence depicting a coachload of tourists in London, and this AEC Reliance/Plaxton passing a line of parked coaches:

Episode 197506: Lothersdale: An Image of England (1975):
Portrait of a tiny North Yorkshire village includes an outing in the rain aboard 513GWX, a Plaxton-bodied Bedford SB5 new in 1964 to Den-Roy of Hebden Bridge, but sold in 1967 to Arnold Benson Tours of nearby Kildwick: