Preserved Royal Blue 2351, 837SUO, a Bristol RELH6G with ECW C45F body, new in May 1964, was the first of this type in the fleet
I'd photographed this coach twice before, a mere 42 years earlier when brand new at Victoria Coach station, click here and here for the pictures - and just like you had to do at Victoria Coach Station, I took the photo before the driver opened the door and the passengers got in the way of the photo.

Photo taken Sunday 2 April 2006, Wisley Aerodrome