The China Clay Twins tease the Caledonians.
This was partly a test to see how they looked with the Class 2 headcode. Normally I'm a stickler for using proper headcoding. However, I do feel some engines look better with a sort of "permanent" class 2 lamp arrangement, i.e. Charlie and Sheffield. Only downside with RWS BnB is that it covers part of the Brendam Bay logo and their RWS numbers.