Amongst other things I also checked out the Sevenoaks-Orpington Rail Replacement on Aug 30th, which
at the Sevenoaks
end was all covered by GO Ahead, though they did bring out E12 SN06BNX which is now belived to be GO Ahead London's oldest closed top decker, and then in Westerham I was slightly surprised to see Stagecoach 10193 SN63NBX on Route 246, the first time I have ever seen a double decker vehicle working that route, having
previously
only ever seen E200's on it:
https://www.flickr.com/photos/69558134@N05/54756373217.