British Thomson-Houston (BTH) was a British engineering and heavy industrial company, based at Rugby, Warwickshire, England. Originally founded to sell products from the Thomson-Houston Electric Company, it soon became a manufacturer using licences from the American company. They were known primarily for their electrical systems and steam turbines.

Rugby is a market town in eastern Warwickshire, England, close to the River Avon. At the 2021 census, its population was 78,117, making it the second-largest town in Warwickshire. It is the main settlement within the larger Borough of Rugby, which had a population of 114,400 in 2021.