The company was originally founded by John James Royle who had premises situated on Liverpool Road, Irlam. In 1900 it became a registered company to take over the business of John Royle. The company specialised as heating engineers for commercial and domestic customers supplying feed water heaters, calorifiers, steam traps, reducing valves and other heating appliances.

During the 1960s the company became a subsidiary of the Fairbairn Lawson Group where it continued to manufacture steam traps and valves in the Filtration Fluid Control Division. In 1980 Royles Ltd passed into the hands of the Receiver and as a result the steam trapping side of the business was acquired by Spirax Sarco Ltd, Cheltenham.