 The company branched out into various related lines of business, including the running of an angora rabbit farm in Staffordshire between 1932 and 1934, and the development of new products such as nylon and Terylene.In 1951, the headquarters of the business was relocated from Spring Hall, Halifax to a 140-acre site in Darlington, County Durham, where a single-storey factory employing 4,000 people was developed at a cost of £7.5 million.The factory had its own railway sidings and produced 113 tons of yarn every week.