PART IGeneral Principle
1General principle
(1)In this Act and enactments passed and instruments made after the coming into force of this section, references (however expressed) to any relationship between two persons shall, unless the contrary intention appears, be construed without regard to whether or not the father and mother of either of them, or the father and mother of any person through whom the relationship is deduced, have or had been married to each other at any time.
(2)In this Act and enactments passed after the coming into force of this section, unless the contrary intention appears—
(a)references to a person whose father and mother were married to each other at the time of his birth include; and
(b)references to a person whose father and mother were not married to each other at the time of his birth do not include,
references to any person to whom subsection (3) below applies, and cognate references shall be construed accordingly.
(3)This subsection applies to any person who—
(a)is treated as legitimate by virtue of section 1 of the [1976 c. 31.] Legitimacy Act 1976;
(b)is a legitimated person within the meaning of section 10 of that Act;
(c)is an adopted child within the meaning of Part IV of the [1976 c. 36.] Adoption Act 1976; or
(d)is otherwise treated in law as legitimate.
(4)For the purpose of construing references falling within subsection (2) above, the time of a person's birth shall be taken to include any time during the period beginning with—
(a)the insemination resulting in his birth; or
(b)where there was no such insemination, his conception,
and (in either case) ending with his birth.