Extent to which Entry Clearance is to be Leave to Enter
4.—(1) A visit visa, during its period of validity, shall have effect as leave to enter the United Kingdom on an unlimited number of occasions, in accordance with paragraph (2).
(2) On each occasion the holder arrives in the United Kingdom, he shall be treated for the purposes of the Immigration Acts as having been granted, before arrival, leave to enter the United Kingdom for a limited period beginning on the date of arrival, being:
(a)six months if six months or more remain of the visa’s period of validity; or
(b)the visa’s remaining period of validity, if less than six months.
(3) In the case of any other form of entry clearance, it shall have effect as leave to enter the United Kingdom on one occasion during its period of validity; and, on arrival in the United Kingdom, the holder shall be treated for the purposes of the Immigration Acts as having been granted, before arrival, leave to enter the United Kingdom:
(a)in the case of an entry clearance which is endorsed with a statement that it is to have effect as indefinite leave to enter the United Kingdom, for an indefinite period; or
(b)in the case of an entry clearance which is endorsed with conditions, for a limited period, being the period beginning on the date on which the holder arrives in the United Kingdom and ending on the date of expiry of the entry clearance.
(4) In this article “period of validity” means the period beginning on the day on which the entry clearance becomes effective and ending on the day on which it expires.