The two lancs flying together was pretty special a few years back.
That’ll be these two then! 😎
Probably for an airshow.
Almost certainly RIAT Fairford, I was there when it came over, it did a number of passes, then, to everyone’s surprise, it landed and taxied over to hangers on the other side of the airfield, so the crew could meet the patron and organisers, then a bit later it taxied out, lined up and took off just as the escort F-15’s came over. Great experience that was. One year they had an SR-71 on static display, that was quite a thing to see, with big puddles of fuel underneath it where the tanks leaked.