This section applies if—
The leave is extended by virtue of this section during any period when—
Leave extended by virtue of this section shall lapse if the applicant leaves the United Kingdom.
Leave extended by virtue of this section may be cancelled if the applicant—
A person may not make an application for variation of his leave to enter or remain in the United Kingdom while that leave is extended by virtue of this section.
But subsection (4) does not prevent the variation of the application mentioned in subsection (1)(a).
The Secretary of State may make regulations determining when an application is decided for the purposes of this section; and the regulations—
In this section—
"administrative review" means a review conducted under the immigration rules;
the question of whether an administrative review is pending is to be determined in accordance with the immigration rules.