A person shall be entitled, on an application for his registration as a British citizen made (subject to subsections (6) and (7)) within five years after commencement, to be registered as such a citizen if either of the following requirements is satisfied in his case, namely—
A person shall be entitled, on an application for his registration as a British citizen made (subject to subsection (8)) within six years after commencement, to be registered as such a citizen if he—
Subject to subsection (5), if, in the case of an application for the registration of a person under subsection (2) as a British citizen, that person has been engaged in relevant service throughout any period (of whatever length), that period shall for the purposes of subsection (2) be treated as a period throughout which he was ordinarily resident in the United Kingdom.
For the purposes of subsection (3) “relevant service ” means—
A person shall not be registered under subsection (2) wholly or partly by reason of service within subsection (4)(b) or (c) unless it seems to the Secretary of State fitting that he should be so registered by reason of his close connection with the United Kingdom.
If in the special circumstances of any particular case the Secretary of State thinks fit, he may treat subsection (1) as if—
but shall not do so in the case of an application based on paragraph (b) of subsection (1) unless the person to whom the application relates would have been entitled to be registered under that subsection on an application so based made immediately before the end of the five years after commencement.
In the case of any person who is a minor at commencement, the reference to five years after commencement in subsection (1) above shall be treated as a reference to five years from the date on which he attains full age.
If in the special circumstances of any particular case the Secretary of State thinks fit, he may treat subsection (2) as if the reference to six years after commencement were a reference to eight years after commencement.