Northgate is one of the 14 residential neighbourhoods in Crawley, a town and borough in West Sussex, England. Crawley was planned and laid out as a New Town after the Second World War, based on the principle of self-contained neighbourhoods surrounding a town centre of civic and commercial buildings. Northgate was one of the four in the "inner ring…Northgate is one of the 14 residential neighbourhoods in Crawley, a town and borough in West Sussex, England. Crawley was planned and laid out as a New Town after the Second World War, based on the principle of self-contained neighbourhoods surrounding a town centre of civic and commercial buildings. Northgate was one of the four in the "inner ring" closest to the town centre, and was the second to be completed: almost all building work on the 168-acre site took place in the first half of the 1950s.