|Fenton Murray and Wood
The Round Foundry was a pioneer not only for Leeds but for the world, producing the first succesful freight locos. They also produced fine stationary engines, experimented with steam ships. The core of their business was supplying machinery to the textile industry. After the death of Murray and Wood the firm became known as Fenton, Murray and Jackson
Note - there might be a few builders in this list that are not in Leeds as they built Leeds designed locos as sub contractors.