(09 Mar 2015, 6:49 pm)aureolin wrote Very helpful - cheers!
I'll keep an eye out tomorrow to see if it's on the same board. I was wondering if they were possibly route testing with it, as it makes no sense that one of the first out the depot would be that.
Scott was correct in saying that it was the last 56 board to leave the depot this morning, being 56D. Below is a photo of it working the 1100 57A from Durham.
http://www.flickr.com/photos/simplybuses/16145143404/