In 1974 the County Borough of Teesside was absorbed into the larger non-metropolitan county of Cleveland along with the towns of Hartlepool and Guisborough.
Local government reorganisation in 1996, recommended by the Banham Review, saw the county of Cleveland broken up into the four independent unitary authority boroughs of Hartlepool, Stockton, Middlesbrough and Redcar and Cleveland (a renamed Langbaurgh).