Security Service Act 1989

4(1)If and so far as the complainant alleges that anything has been done by the Service in relation to any property of his, the Tribunal shall refer the complaint to the Commissioner who shall investigate whether a warrant has been issued under section 3 of this Act in respect of that property and if he finds that such a warrant has been issued he shall, applying the principles applied by a court on an application for judicial review, determine whether the Secretary of State was acting properly in issuing or renewing the warrant.

(2)The Commissioner shall inform the Tribunal of his conclusion on any complaint so far as referred to him under this paragraph.