N. Corah and Sons was a manufacturer of hosiery and textiles, located in Leicester in the United Kingdom. At one time it was the largest knitwear producer in Europe, and its products had a major influence on the development and prosperity of the Marks & Spencer chain of retail stores.
The company was founded by Nathaniel Corah at the Globe Inn, Silver Street, in Leicester – a building which still survives, and which at that time was closely associated with the city's . Corah's business model was to buy completed stockings in Leicester, and to sell them elsewhere at a profit. The majority of Corah's sales were in Birmingham, and he maintained a stock room in another public house there. The business soon grew, and its own premises on Union Street in Leicester were purchased in 1824. The company remained at these premises until 1845. In 1830, Corah's three sons – John, Thomas and William – were taken into partnership. The name of the firm became Nathaniel Corah & Sons.
In 1855, Thomas Corah & Sons had 2000 knitting frames, making it one of the largest hosiery firms in the country. By 1865, its premises on Granby Street had become too small, and so the company decided to relocate to a location close to the River Soar and the Great Central Railway. A site north of the city centre was chosen, in the parish of St Margaret. The initial plans devised a scheme for the construction of premises on an immense scale: the main warehouses was 160 feet long and 50 feet wide. The rear was an even larger building, the factory, the dimensions of which were 294 by 80 feet. The 140-foot chimney was attached to the factory. The works were driven by a large steam powered beam engine, which was started for the first time on 13 July 1865.
By this time the firm had expanded its product range beyond hosiery. In the 1870s, for instance, it began producing football and rugby jerseys, in addition to a range of men and women's garments.