6.—(1) This regulation applies only in relation to a member which has been a member of the Scheme for at least three consecutive membership years.
(2) The member may cancel its membership of the Scheme by giving the Secretary of State notice in writing of the cancellation.
(3) Where a notice under paragraph (2)—
(a)is given before 1st September in a membership year, the notice takes effect at the end of that membership year;
(b)is given on or after 1st September in a membership year, the notice takes effect at the end of the following membership year.