3.—(1) The port health authority for the port health district constituted under article 2 is a joint board consisting of 17 members.
(2) The members of the joint board must be appointed by the relevant riparian authorities from the members of their respective councils as follows—
(a)five members from Redcar and Cleveland Borough Council;
(b)five members from Stockton-on-Tees Borough Council;
(c)five members from Middlesbrough Borough Council; and
(d)two members from Hartlepool Borough Council.
(3) The joint board constituted under paragraph (1) is to be a body corporate called the River Tees Port Heath Authority.