Originally brass founders they turned to producing miners lamps and oil safety lamps

Lancaster & Tonge was a maker of stationary engines. The business began in 1879 when Henry Lancaster and Richard Christmas Fletcher Tonge, Engineer of Manchester went into partnership in Pendelton, employing four hands. Following the death of Henry Lancaster, Richard CF Tonge, Richard Tonge of Manchester, a Merchant; Joseph Butterworth, Engineer of Lancaster works, Manager; and Harry Entwisle, Cashier of the Lancaster works; Richard Brutton, Chartered Accountant; Frederick Swallow, Merchant of Glasgow formed the limited company of Lancaster and Tonge Ltd on the 16 September 1895. In the 1890s the company listed its specialist products as “Lancaster” Steam Traps, “Lancaster” Spiral Spring Pistons, “Lancaster” Serpent Coil, “Lancaster” Vibration and Sight-Feed Lubricators, “Lancaster” Malleable Iron Union, “Lancaster” Adjustable Bearings, and “Lancaster” Condenser and Feed-Water Heater.' The company boasted of paying its one hundred employees well and of being an early adopter of the 53 hour working week. The company continued to trade as Lancaster and Tonge Ltd with a change of name to Molehill Investment Co Ltd in November 1970. Lancaster & Tonge entered voluntary liquidation in 2021 and the company was formally dissolved in 2022.

Mathematic and scientific instrument maker and supplier, originally a partnership formed in 1878 between Joseph Halden and A.G. Thornton. It did not last long and each went their own separate ways, Halden setting up in new premises in Albert Square. The company prospered and after Joseph retired it is assumed his son took over the business. As well as selling wholesale, drawing and surveying instruments the company also patented its own designs for equipment. The company acquired other larger premises until by 1920 it had other showrooms in the main cities in United Kingdom. It produced the Calculex, a circular calculator which was considered the cheapest and most serviceable model at the time. The company continued to be run by members of the family until the untimely death of J.L. Halden in 1965 after which Managers from the company continued to run it until 1969 when it was taken over by the Ozalid Group.

Platt Brothers & Co Ltd was the successor limited liability company to Platt Brothers and Company and operated from 1868-1982. Company founder Henry Platt established his first company in 1821. He formed a partnership with Elijah Hibbert in 1822, with the company name of Hibbert and Platt. Henry Platt's sons Joseph and John Platt joined the company and the name changed to Hibbert, Platt and Sons. In 1846, John Platt became the senior partner, following the deaths of his father and elder brother. In 1854, the Platt family bought out the Hibbert family interest in the company and formed Platt Brothers and Company and from 1868 traded as a limited liability company. Because of the Depression and subsequent downturn in trade during the 1930s a trading company was formed by a number of local textile machinery makers and resulted in the formation of the Textile Machinery Makers Ltd in 1931. Although they had merged, the companies continued to trade under their own names until 1970. The subsequent rationalisation resulted in a change of name to Platt UK Ltd.

Company designed and installed lifts for commercial premises and private residences.