The post of county alderman was abolished, and the entire council was thereafter directly elected every four years. In 1986 the six metropolitan county councils were abolished, with their functions transferred to the metropolitan boroughs and joint boards.[15] The Local Government Act 1992 established a new Local Government Commission whose remit was to conduct a review of the structure of local administration, and the introduction of unitary authorities where appropriate. Accordingly, the number of county councils was reduced: Avon, Berkshire, Cleveland, Hereford and Worcester and Humberside were abolished, while Worcestershire County Council was re-established.