Greater Brighton City Region in the context of "Brighton and Hove"

The Brighton and Hove Built-up area or Brighton/Worthing/Littlehampton conurbation has a population of 474,485 (2011 census), making it England's 12th largest conurbation. This was an increase of around 3% from the 2001 population of 461,181. Named the Brighton/Worthing/Littlehampton conurbation by the Office for National Statistics for the 2001 census and Brighton and Hove Built-up area for the 2011 census, the area has also been known as Greater Brighton, although the Greater Brighton City Region that was created in 2014 from seven local authorities in Sussex covers a much larger area. The conurbation dominates West and East Sussex, with around one in three of Sussex's population living within its boundaries. It is also the second largest conurbation in the South East region of England and the second largest conurbation on the English Channel coast, in either England or France. In both of these cases the Brighton conurbation trails the Southampton and Portsmouth conurbation. The Brighton/Worthing/Littlehampton conurbation was the largest on the Channel before Portsmouth and Southampton's conurbations were combined for much official data analysis after the 2011 census.

This conurbation is also the UK's most densely populated major conurbation outside London with 5,304 inhabitants per square kilometre (13,740/sq mi). This is due to its tight boundaries between the South Downs national park to the north, and the English Channel to the south together with less land devoted to domestic gardens in English seaside towns than in inland towns.

Sussex (/ˈsʌsɪks/; from the Old English Sūþseaxe; lit. 'South Saxons'; 'Sussex') is an area of South East England that was historically a kingdom and, later, a county. The current ceremonial counties of East Sussex and West Sussex cover approximately the same area. The two ceremonial counties border Surrey to the north, Kent to the north-east, the English Channel to the south, and Hampshire to the west. Sussex contains the city of Brighton and Hove and its wider city region, part of the South Downs National Park and the national landscape of the High Weald, and Chichester Harbour. Its coastline is 137 miles (220 km) long.

The Kingdom of Sussex emerged in the fifth century in the area that had previously been inhabited by the Regni tribe in the Romano-British period. In about 827, shortly after the Battle of Ellendun, Sussex was conquered by Wessex. From 860 it was ruled by the kings of Wessex, and in 927 it became part of the Kingdom of England. By the Norman period, Sussex was subdivided into six administrative districts known as rapes, which were themselves divided into hundreds. By the sixteenth century, the eastern three rapes and the western three rapes had been combined for most meetings of the court of quarter sessions, a division which was reinforced when the administrative counties of East Sussex and West Sussex were established in 1889. Subsequent local government reforms maintained the division into east and west. The county retained a single lord lieutenant and sheriff until 1974, when they were replaced with separate posts for East and West Sussex and Sussex lost its status as a ceremonial county.