TVR Class K - a numerous class of engine thought up by Tom Hurry Riches, it's design was also to be found as fellow engineer Barton-Wright's Class 25 down south on the Lancashire and Yorkshire.

MYSTERY TANK: 

an Unknown 0-6-0 Saddle Tank!
Based on the frame of the 0-4-4 just across, i made approximate guesses to develop an outline for this photo-scarce locomotive! it was a challenge, but well worth the effort - possibly the best saddle tank I've seen yet!.