57.—(1) An additional pension account must be established for each active member (P) in respect of whom an additional pension election is made.
(2) If P is an active member in relation to more than one employment, only one additional pension account is to be established.
(3) The additional pension account must remain open until—
(a)an additional pension is paid in respect of P;
(b)a transfer payment is made in respect of P's rights to the accrued additional pension; or
(c)all additional pension contributions are refunded under Part 2 of Schedule 2.
(4) Part 2 of Schedule 2 has effect in relation to the making of an additional pension election.