|RSH||Robert Stephenson and Hawthorn (Darlington etc)||Rail|
Though based in the North East there are a couple of links to Leeds engine building. Many of the locomotive orders built at the Round Foundry were subcontracted from Robert Stephenson, a century later Robert Stephenson & Hawthorn built some of Hunslet's Austerity 0-6-0ST's. After Kitson had closed the goodwill was transferred to RSH so when Corby wanted. Some of the early Fowler ploughing engines were built by RSH.
Note - there might be a few builders in this list that are not in Leeds as they built Leeds designed locos as sub contractors.