1.—(1) An election to pay contributions under regulation C11 shall be made by notice given in writing to the pensionable employee’s employing authority, and shall specify—
(a)the amount of the additional contributions which are to be paid, expressed either as a percentage of his remuneration or as a sum payable at the times mentioned in sub-paragraph (2); and
(b)the proportion (if any) of the contributions which he wishes to be used to provide benefits payable in the event of death.
(2) The additional contributions shall be payable on the pensionable employee’s usual pay day, and for that purpose shall be deductible by the employing authority, or be otherwise recoverable by the Committee, under regulation C14.