(1)A person shall become a British citizen on the commencement of this section if—
(a)he was born on or after 26 April 1969 and before 1 January 1983,
(b)he was born to a woman who at the time was a citizen of the United Kingdom and Colonies by virtue of her birth in the British Indian Ocean Territory, and
(c)immediately before the commencement of this section he was neither a British citizen nor a British overseas territories citizen.
(2)A person who is a British citizen by virtue of subsection (1) is a British citizen by descent for the purposes of the British Nationality Act 1981 (c. 61).
(3)A person shall become a British overseas territories citizen on the commencement of this section if—
(a)subsection (1)(a) and (b) apply in relation to him, and
(b)immediately before the commencement of this section he was not a British overseas territories citizen.
(4)A person who is a British overseas territories citizen by virtue of subsection (3) is such a citizen by descent for the purposes of the British Nationality Act 1981.