Greater London Authority Act 1999

2 Membership of the Authority and the Assembly

(1) The Authority shall consist of—

(a) the Mayor of London; and

(b) an Assembly for London, to be known as the London Assembly.

(2) The Assembly shall consist of twenty five members, of whom—

(a) fourteen shall be members for Assembly constituencies (“constituency members”); and

(b) eleven shall be members for the whole of Greater London (“London members”).

(3) There shall be one constituency member for each Assembly constituency.

(4) The Assembly constituencies shall be the areas, and shall be known by the names, specified in an order made by the Secretary of State.

(5) Schedule 1 to this Act (which makes further provision about Assembly constituencies and orders under subsection (4) above) shall have effect.

(6) The Mayor and the Assembly members shall be returned in accordance with the provision made in or by virtue of this Act for—

(a) the holding of ordinary elections of the Mayor, the constituency members and the London members; and

(b) the filling of vacancies in the office of Mayor or among the constituency members or the London members.

(7) An ordinary election involves the holding of—

(a) an election for the return of the Mayor;

(b) an election for the return of the London members; and

(c) elections for the return of the constituency members.

(8) The term of office of the Mayor and Assembly members returned at an ordinary election shall—

(a) begin on the second day after the day on which the last of the successful candidates at the ordinary election is declared to be returned; and

(b) end on the second day after the day on which the last of the successful candidates at the next ordinary election is declared to be returned;

but this subsection is subject to the other provisions of this Act and, in particular, to any provision made by order by virtue of subsection (4) of section 3 below.

(9) If at any ordinary election the poll at the election of an Assembly member for an Assembly constituency is countermanded or abandoned for any reason, the day on which the last of the successful candidates at the ordinary election is declared to be returned shall be determined for the purposes of subsection (8) above without regard to the return of the Assembly member for that Assembly constituency.

(10) The validity of proceedings of the Assembly is not affected by any vacancy in its membership.

(11) The validity of anything done by the Authority is not affected by any vacancy in the office of Mayor or any vacancy in the membership of the Assembly.