Hunslet 40HP No.6285 was built for an iron ore mine in Cumbria, northern England. It operated underground on a 2'6" gauge system. Unlike in a coal mine where the risk of gas explosion is greater, it did not need to be flame-proof so the electrics were unshielded. The exhaust was fitted with a conditioner, necessary for underground operation.
It returned at some time to Hunslet for regauging to 2', and then was eventually sold to Saunders & Forster Steel Stockholders of Stratford, East London after passing through several dealers.
The locomotive was later purchased from S&F by a WHR member. On arrival at Gelert's Farm, the cab was removed and the conditioner bypassed. Seen from the front, No.5 has a distinctive asymmetrical profile, with the maker's badge in art deco style diagonally across the front grille.