The Science Museum Group (SMG) is devoted to the history and contemporary practice of science, medicine, technology, industry and media. Its collections form an enduring record of scientific, technological and medical change since the 18th century. They are the largest, most comprehensive and most significant in their field anywhere in the world. SMG incorporates the Science Museum, the Science Museum Library and the Wellcome Collections of the History of Medicine in South Kensington; the Museum of Science & Industry (MSI) in Manchester; the National Railway Museum (NRM) in York and in Shildon; and the National Media Museum (NMeM) in Bradford. Collections stores are located at Wroughton, Wiltshire; Blythe House in West Kensington, London; and Brunel Avenue in Salford.