R. B. Longridge and Company was a steam locomotive works which was established in 1838 at Bedlington, Northumberland, England, by Michael Longridge (1785-1858). The firm was directed by Robert Bewick Longridge (1821-1914), who was Michael's fourth son. It was closely connected with the Bedlington Ironworks which had been bought between 1782 and 1788 (sources differ) by Thomas Longridge, (Michael's uncle) and William Hawks (Thomas's brother-in-law). The Bedlington Ironworks had been building locomotives since about 1827, but R. B. Longridge and Company was a new and up-to-date locomotive factory.[1]