In 1974, the Local Government Act 1972 abolished the administrative county and the county boroughs, reconstituting County Durham as a non-metropolitan county. The reconstituted County Durham lost territory to the north-east (around Gateshead, South Shields and Sunderland) to Tyne and Wear and to the south-east (around Hartlepool) to Cleveland. At the same time it gained the former area of Startforth Rural District from the North Riding of Yorkshire. The area of the Lord Lieutenancy of Durham was also adjusted by the Act to coincide with the non-metropolitan county (which occupied in 1981).