The North Midlands is a loosely defined area covering the northern parts of the Midlands in England. It is not one of the ITL regions like the East Midlands or the West Midlands. A statistical definition in 1881 included the counties of Derbyshire, Leicestershire, Lincolnshire, Nottinghamshire and Rutland, an area historically known as the Five Burghs of Danelaw. A Second World War civil defence region called North Midland included the five counties and Northamptonshire. It has remained in informal use for Derbyshire and Nottinghamshire, the northern parts of Lincolnshire and Staffordshire, and sometimes the far south of Northern England. A North Midlands combined authority area was proposed in 2016 for Derbyshire and Nottinghamshire, but cancelled later that year. History and extent A North Midlands region was first defined for the 1881 UK census. It was defined as the entirety of Derbyshire, Leicestershire, Lincolnshire, Nottinghamshire and Rutland. A new definition of the region appeared in 1939, for various government statistical purposes: Derbyshire without High Peak, Leicestershire, Lincolnshire, Nottinghamshire, Rutland and the Soke of Peterborough. In 1942, High Peak was added, but it was removed again in 1946. In 1962, it was merged into a new Midlands statistical region. The North Midlands has remained in use as an informal term for part of the area, covering Derbyshire and Nottinghamshire, the northern parts of Lincolnshire and Staffordshire, and Cheshire and South Yorkshire to a lesser degree, even though Staffordshire, Cheshire and South Yorkshire never formed part of the statistical region. For example, in the 1960s, Sheffield was described in an official publication as "the vigorous shopping and cultural centre of the North Midlands". The introduction to J. B. Priestley's play An Inspector Calls specifies that it is set in the fictional town of Brumley in the North Midlands. Organisations The North Midlands Helicopter Support Unit was operated jointly by Nottinghamshire and Derbyshire Police until 2013, when all police air support functions were taken over by the newly formed National Police Air Service. The service subsequently closed the North Midlands unit in 2016. The University Hospitals of North Midlands NHS Trust operates in Staffordshire and covers the Royal Stoke University Hospital in Stoke-on-Trent and Stafford County Hospital. A North Midlands Combined Authority was to have been formed in 2017. South Derbyshire District Council, High Peak Borough Council, Amber Valley Borough Council and Erewash Borough Council all voted to reject the proposal, and Chesterfield Borough