Spotted in the yard at Quorn a couple of weeks ago, this industrial Barclay shunter. It used to work the Bardon Hill quarry in Leicestershire, so hasn't had to travel very far to its new home.
The loco appears to be ex-quarry. It's certainly not been prettied up, and to my eye, looks all the better for this lack of care.
Modelling option is the Mercian Models etched kit. I've built this in 3.5 and 4mm scales and it goes together well. You'd need to do a little work on some of the details to represent this loco (the kit is for the WD version) but not much - a few bonnet steps as far as I can tell.