My understanding was it was non operational? and/or only by invitation?. Can anyone confirm?. The one Ex South Shields Collage. is in a dismantled state at the Anson Engine Muesem.There is a 3 cyl Doxford engine at Beamish Museam Stanley Co Durham worth a look
We used to take liner readings standing on the lower piston with the turning gear remote in hand. And on one ocasion, my Wife sat on the tops writing down the readings!.