5(1)The fact that a notice of proposed civil partnership has been given must not be recorded in the register unless the registration authority—
(a)is satisfied by the production of evidence that both the proposed civil partners have reached 21, and
(b)has received a declaration made by each of the proposed civil partners—
(i)specifying their affinal relationship, and
(ii)declaring that the younger of them has not at any time before reaching 18 been a child of the family in relation to the other.
(2)Sub-paragraph (1) does not apply if a declaration is obtained under paragraph 7.
(3)A declaration under sub-paragraph (1)(b) must contain such information and must be signed and attested in such manner as may be prescribed by regulations.
(4)The fact that a registration authority has received a declaration under sub-paragraph (1)(b) must be recorded in the register.
(5)A declaration under sub-paragraph (1)(b) must be filed and kept by the registration authority.