In section 50 of the British Nationality Act 1981 (interpretation) in subsection (9A) (a child's father) for paragraphs (b) and (c) substitute—

“(b)

where a person is treated as the father of the child under section 28 of the Human Fertilisation and Embryology Act 1990 or section 35 or 36 of the Human Fertilisation and Embryology Act 2008, that person, or

(ba)

where a person is treated as a parent of the child under section 42 or 43 of the Human Fertilisation and Embryology Act 2008, that person, or

(c)

where none of paragraphs (a) to (ba) applies, a person who satisfies prescribed requirements as to proof of paternity.”