Heritage Shunters Trust (HST) is a trading name of The South Yorkshire Railway Co. Ltd. which was founded in 1989.
Most of the locomotives are kept at Rowsley, Derbyshire, England, on the site of preserved railway Peak Rail but the company is a separate outfit.
Galas are usually held twice a year where the collection is put on display and brake van rides are hauled by an assortment from the active fleet.
Guided tours of the collection, and the viewing of restoration work being undertaken, are available most weekends for a small charge.
These locomotives, once ubiquitous in rail yards and industrial sidings, were facing an uncertain future due to the decline of traditional shunting operations.