Martyn Hearson recently purchased a few large format prints that were part of the old "Bus & Coach trade magazine" archives, and although some of them had been photographically modified for publication, Martyn says he quickly restored some of the affected bits, and given the quality I wonder if perhaps these could have also been East Kent Buses Publicity Shots?
London Victoria Coach Station in
1961 was the setting for East Kent Park Royal bodied AEC Reliance
WFN508 blinded for "Le Roy Tours", and Martyn says this version of the illustration
has obviously been attended to by the in-house artist as its gained some additional shine prior to publication, while the other shot
depects 1968 built Willowbrook 'DP' AEC Reliance
OJG131F
in what we think was 1972,
with a destination blind proclaiming the coach to be on a Northern France Day Tour, parked on a quayside somewhere on the Northern French Coast, and not too far inland judgeing by the presence of a British Rail Sealink Ferry, with Martyn also saying that of all East Kent's fleet from the era, he personally considered these OJG-F's as firm favourites, having ridden one from Hearne Bay to Sussex in 1979:
https://groups.google.com/g/mdekbusclub/c/rNVEopcdayc.