|HE||Hunslet Engine Co||Rail|
One of the best known of the Leeds firms having produced many notable designs such as the Austerity 0-6-0STs and the Quarry Hunslets, this company's varied products were supplied all over the world. Parts were also supplied to other builders including gear boxes to BR Swindon for the class 14 0-6-0DH locos. Babcock and Wilcox built a few Hunslet locomotives in Spain under licence.
Note - there might be a few builders in this list that are not in Leeds as they built Leeds designed locos as sub contractors.