WArmington & Sims Engine CompanyWBoulton and WattWCarels FrèresWClayton & ShuttleworthWClayton WagonsWFenton, Murray and JacksonWGaar, Scott & Co.WGeorge Saxon & CoWGimson and CompanyWGoldie & McCullochWHathorn DaveyWJ & E WoodWJohn Musgrave & SonsWLosh, Wilson and BellWMarshall, Sons & Co.WMcIntosh & SeymourWWilliam Roberts & Co of NelsonWScott & Hodgson LtdWSoulé Steam Feed WorksWW & J Galloway & SonsWYates and Thom