Paragraph 9
Subject to sub-paragraphs (2) and (3), if a person who has made an election under regulation C3(2)(c) of the 1988 Regulations—
before the end of the contribution period ceases to be in full-time pensionable employment, and
does not again enter such employment within one month and before becoming entitled to payment of retirement benefits,
the election under regulation C3(2)(c) of the 1988 Regulations ceases to have effect.
Unless he received a repayment of contributions under regulation C12, the person may by giving written notice to the Secretary of State within 3 months after the end of his employment elect to complete payment of the additional contributions so that paragraph 2 of Schedule 7 shall apply by making a lump sum payment under this paragraph.
The amount of the payment is, subject to paragraph 3 of Schedule 3, the actuarial equivalent, when the employment ended, of the additional contributions that would have been payable for the remainder of the contribution period.
If the payment is not made within 3 months after the end of the person’s employment the election ceases to have effect.
A lump sum payable under this paragraph may be set off against any retirement lump sum to which the person is entitled.