24.—(1) The scheme manager may decide that a period of service in respect of which members' contributions are not paid is not a period of pensionable service if—
(a)the scheme manager has sent the member a demand under regulation 194 (“the demand”) in respect of those contributions; and
(b)within 3 years after the date of the demand, the member has not paid the whole of the amount and interest stated in the demand.
(2) The period of service is not a period of pensionable service if the scheme manager—
(a)gives the member written notice to that effect; and
(b)repays the member any amount paid in part satisfaction of the demand.