A Metropolitan County is a 1974 imported type of administrative units in England. With its establishment the fact was taken into account that the metropolitan areas created during the Industrial Revolution superimpose the traditional county boundaries. In 1986, the Councils of Metropolitan counties abolished under Margaret Thatcher because they were bastions of the Labour Party. Its competences have been delegated to the subdivided Metropolitan Boroughs. As administrative and statistical units, however, the metropolitan counties persist. There are six metropolitan counties following:
Also, Greater London is sometimes referred to as a metropolitan county, although this county has a different task and definition.
In addition to the Metropolitan County there is also the non-metropolitan counties, which are subdivided into non-metropolitan districts.