Nice, I was working at the Sheringham end of the line this day, B12 had a bit of a technical problem on the way back and a diesel replaced it for the rest of the day. I think its back on line now.
Yes, We got caught at Weybourne when it failed. Braking problems? Loved the old 31 that took over.
D5631 (31207) at Holt by kevaruka, on Flickr