13(1)A person holding the office of constable immediately before his appointment as the chief executive of the Authority—
(a)continues to hold that office while he is the chief executive; and
(b)as the chief executive, shall hold that office with the rank of chief constable.
(2)A person holding the office of constable immediately before his appointment as a member of staff of the Authority (other than the chief executive) continues to hold that office while he is a member of that staff.