Engineering Industry
- Automotive Products Ltd (Filter Division), Bolton
- Bolton & Hayes Ltd, Reinforced Concrete Engineers, Bolton
- Bolton Gate Company
- Bolton Iron and Steel Company
- Booth, John & Sons, Constructional Engineers, Bolton
- Chadwick, James Ltd, School Hill Ironworks, Little Bolton
- Chatwood Safe Company Ltd, Bolton
- Dobson & Barlow, Engineers & Machine Makers, Bolton
- Greenhalgh’s Foundry, Atherton
- Hick Hargreaves & Company Ltd, Soho Works, Bolton
- Jackson & Brother, Wharf Foundry, Little Bolton
- Kay & Company, Brassfounders, Bolton
- Kirkham, J. & W., Lark Street Brassworks, Bolton
- Milner Engineering Ltd, Horwich
- Musgave, John & Sons, Globe Ironworks, Bolton
- Roberts, R. E. & Sons, Lead Pipe Manufacturers, Bolton
- Ryder Brothers, Beehive Foundry, Bolton
- Sharp & Hargreaves, Iron & Steel Manufacturers, Bolton
- Taylor, George, All Saints Street Brassworks, Bolton
- Threlfall, Richard & Company, Machine Makers, Bolton
- Wadsworth, William & Sons, Lift Manufacturers, Bolton
- Walmsley, Thomas & Sons, Atlas Forge, Bolton
- Wood, John & Edward, Victoria Foundry, Bolton