The history of local government in Sussex is unique and complex. Founded as a kingdom in the 5th century, Sussex was annexed by the kingdom of Wessex in the 9th century, which after further developments became the Kingdom of England. It currently corresponds to two counties, East Sussex and West Sussex.
After the Reform Act 1832 Sussex was divided for purposes of administration into an eastern and a western division; these divisions were coterminous with the two archdeaconries of Chichester and Lewes[1] and also the three eastern and three western county subdivisions respectively. In 1889, following the Local Government Act 1888, using those same boundaries, Sussex was divided into two administrative counties, East Sussex and West Sussex, together with two self-governing county boroughs, Brighton and Hastings, later joined by Eastbourne. In 1974, under the Local Government Act 1972, the county boundaries were revised with the mid-Sussex areas of East Grinstead, Haywards Heath, Burgess Hill and Hassocks being transferred from the administrative area of East Sussex into that of West Sussex, along with the Gatwick area that historically has been part of Surrey. The county boroughs were returned to the control of the two county councils but in 1997 the towns of Brighton and Hove were amalgamated as a unitary local authority and in 2000, Brighton and Hove was given city status.[2]
There continue to be a range of organisations that operate across the entirety of Sussex, even though it is administered as two non-metropolitan counties of East and West Sussex. Organisations providing public services to across Sussex include Sussex Police, NHS Sussex, and the Sussex Inshore Fisheries and Conservation Authority. Sussex is recognised as a single cultural region, significant in culture and sport and is used by a range of organisations as a regional unit.