Ruston diesel loco in loco shed, Telford Steam Railway. This Ruston diesel loco was being worked on in the loco shed, when photographed. Ruston Hornsby used to be a major manufactuer of standard and narrow gauge railway locomotives, but following takeovers and mergers, that side of the business was dropped, and today the company no longer exists. However its Lincoln works, owned by Siemens, today manufactures gas turbines.