53.—(1) An election under regulation 51 in respect of a member's (M) pension must be made by notice in writing given to the scheme manager.
(2) The notice must be in such form and contain such information as the scheme manager requires.
(3) Subject to paragraphs (6) and (7), the election takes effect when it is accepted by the scheme manager.
(4) The election may not be withdrawn, amended or revoked after it has taken effect.
(5) The election does not take effect if—
(a)M or the person in whose favour the election is made (the beneficiary) dies on or before the day on which the scheme manager accepts it; or
(b)the scheme manager is not satisfied that, at the time the election is made, M is in good health.
(6) The election is treated as not having taken effect if the beneficiary dies before M is notified in writing that the scheme manager has accepted the election.