10.—(1) Subject to sub-paragraph (3) and paragraph 11, a woman in relation to whom the election conditions specified in sub-paragraph (4) are satisfied may elect to pay family benefit contributions in respect of the whole or a part of any reckonable service attributable to a period—
(a)that ended before 1st April 1972; or
(b)for which contributions have been paid under regulation C3, C5, C6, or C7
or attributable to the receipt before 6th April 1988 of a transfer value.
(2) Subject to sub-paragraph (3) and paragraph 11, a woman in relation to whom the election conditions specified in sub-paragraph (4) are satisfied may elect to pay family benefit contributions in respect of the whole or a part of any reckonable service not falling within sub-paragraph (1) which is attributable to a period that—
(a)began after 31st March 1972 and ended before 6th April 1988; and
(b)would otherwise not count in calculating any pension becoming payable to her widower.
(3) Where an election is made in respect of a part only of any service, the part shall consist of one or more whole years.
(4) The election conditions are that she is married, and either—
(a)is in pensionable employment; or
(b)ceased after 5th April 1988 and before 1st September 1989 to be in such employment and immediately became entitled to payment of retirement benefits.