With grateful thanks to Andy Skarstein for permission to use his images.
Yes it's a combination of two images taken outside Buckingham palace at The Trooping of the Colour Ceremony in June 1980. Three Vulcans escorted by ??? (looks like 3 English Electric Lightnings to my untrained eye + ??) coupled with a shot of The Royal Standard.
Congratulations to Her Majesty from 655 MaPS.