(2)A person to whom this section applies shall be entitled, on an application for his registration as a British citizen, to be registered as such a citizen if the following requirements are satisfied in the case of that person, namely— (a)subject to subsection (3), that he was in the United Kingdom at the beginning of the period of five years ending with the date of the application and that the number of days on which he was absent from the United Kingdom in that period does not exceed 450; and (b)that the number of days on which he was absent from the United Kingdom in the period of twelve months so ending does not exceed 90; and (c)that he was not at any time in the period of twelve months so ending subject under the immigration laws to any restriction on the period for which he might remain in the United Kingdom; and (d)that he was not at any time in the period of five years so ending in the United Kingdom in breach of the immigration laws. (3)So much of subsection (2)(a) as requires the person in question to have been in the United Kingdom at the beginning of the period there mentioned shall not apply in relation to a person who was settled in the United Kingdom immediately before commencement..