(1)  The Director, in writing, may alter a leave permit –

(a) by extending the period for which the permit is to remain in force; or

(b) by varying the conditions or restrictions to which the permit is subject.

(2)  As soon as possible after altering a leave permit, the Director is to give notice of the alteration to both the person to whom the permit is granted and the custodian (if any).

(3)  For the purposes of subsection (2) , the giving to any person of a copy of a leave permit as altered is taken to be sufficient notice of the alteration.