7.—(1) A police officer may at any time elect that regulation 5(1) shall not apply in his case by notice in writing given to the Board.
(2) Subject to paragraph (3), the date on which an election under paragraph (1) takes effect shall be the date on which an instalment of pay next falls due to him after the receipt of notice under paragraph (1).
(3) In the case of a police officer who has given notice under paragraph (1) within three months of the date on which he became such and to whom regulation 12 does not apply, his election under that paragraph shall be deemed to have taken effect on that date.
(4) In a case falling within paragraph (3), the Board shall subject to regulation 32 pay to the police officer in question a sum equal to the sum of the pension contributions paid by him since the date on which the election is deemed to have taken effect.
(5) A police officer who has made an election under paragraph (1) may cancel such election by notice in writing given to the Board.
(6) Where paragraph (5) applies—
(a)the election shall cease to have effect as from the date on which an instalment of pay next falls due to the police officer concerned after the receipt of such notice; and
(b)that officer shall be entitled to make a further election; but
(c)that officer shall not be entitled to cancel that further election during the same period of service as a police officer.
(7) A police officer shall not, if the Board so resolve, be entitled to cancel an election under paragraph (1) unless he has undergone a medical examination in accordance with regulation 6 (and any fee payable in respect of such an examination and a report thereon shall be paid by the police officer concerned).
(8) A police officer in respect of whom it is determined, following a medical examination under paragraph (7), that the likely cost of providing him with benefits under these Regulations is disproportionately high, shall (subject to any appeal under regulation 6(4)) be entitled to cancel his election under paragraph (1) only subject to the condition that he shall not be eligible to receive pension awards payable on the ground of permanent disablement.
(9) A police officer who was ineligible to receive pension awards payable on the ground of permanent disablement under regulation 6 on the date of his election under paragraph (1) shall upon cancellation of that election be ineligible to receive pension awards payable on the ground of permanent disablement.