(1)Subject to the provisions of this section, a person born after the commencement of this Act shall be a citizen of the United Kingdom and Colonies by descent if his father is a citizen of the United Kingdom and Colonies at the time of the birth:
Provided that if the father of such a person is a citizen of the United Kingdom and Colonies by descent only, that person shall not be a citizen of the United Kingdom and Colonies by virtue of this section unless—
(a)that person is born or his father was born in a protectorate, protected state, mandated territory or trust territory or any place in a foreign country where by treaty, capitulation, grant, usage, sufferance, or other lawful means, His Majesty then has or had jurisdiction over British subjects ; or
(b)that person's birth having occurred in a place in a foreign country other than a place such as is mentioned in the last foregoing paragraph, the birth is registered at a United Kingdom consulate within one year of its occurrence, or, with the permission of the Secretary of State, later ; or
(c)that person's father is, at the time of the birth, in Crown service under His Majesty's government in the United Kingdom ; or
(d)that person is born in any country mentioned in subsection (3) of section one of this Act in which a citizenship law has then taken effect and does not become a citizen thereof on birth.
(2)If the Secretary of State so directs, a birth shall be deemed for the purposes of this section to have been registered with his permission notwithstanding that his permission was not obtained before the registration.