McConnel & Kennedy Mills are a group of cotton mills on Redhill Street in Ancoats, Manchester, England. With the adjoining Murrays' Mills, they form a nationally important group. The complex consists of six mills, Old Mill built in 1797, Long Mill from 1801 and Sedgewick Mill built between 1818 and 1820.A further phase of building in the early 20th century added Sedgewick New Mill in 1912, Royal Mill, originally the New Old Mill built in 1912 but renamed in 1942, and Paragon Mill also built in 1912. Paragon Mill at eight storeys high was the world's tallest cast iron structure when it was built.