(1) The period for which a suppression order other than an interim order operates must be—
(a) determined by the court or tribunal in accordance with this section; and
(b) specified in the order.
For interim orders, see section 20(5).
(2) The period for which a suppression order operates may be specified by reference to—
(a) a fixed or ascertainable period; or
(b) subject to subsection (3), the occurrence of a specified future event.
(3) If the period for which a suppression order operates is specified by reference to a future event that may not occur, the order must also specify a period from the date of the order (not exceeding 5 years) at the end of which the order expires unless sooner revoked.
An order that is expressed to be in effect until further order of the court or tribunal would also need to specify a period not exceeding 5 years at the end of which the order expires unless sooner revoked.
(4) The court or tribunal must ensure that a suppression order operates for no longer than is reasonably necessary to achieve the purpose for which it is made.