This is Whit Friday and 66795 had been diverted towards Uppermill and down Chapel Road (see the collection in the other direction). It returned direct from Chapel Road up the hill and the driver is seen having a quick word with the inspector stationed at the top of the hill to maintain the service at this time of very fluid obstructions!
NIKON CORPORATION NIKON D50, f/5 @ 40 mm, 1/1000, ISO 280, No Flash