The Local Elections (Declaration of Acceptance of Office) (Amendment) (Wales) Order 2001
Section 83(1) of the Local Government Act 1972 (“the 1972 Act”) prohibits a person elected to the office of chairman, vice-chairman, councillor or elected mayor of a county or county borough council in Wales from acting in such office unless that person has made a declaration of acceptance of office in the form prescribed by order and that declaration has been delivered to the proper officer of the council within two months from the day of the election. If such a declaration is not made and delivered to the proper officer within the appointed time, the office of that person becomes vacant.