“… A refusal to review is not within the category of decision appealable under s.4, although a decision under para 18A not to remove a person’s name is appealable. While it is no longer necessary to decide the point (in that the applicant has been given an extension of time anyway) and I do not do so, I would not be inclined to accept that every time the DBS, who have a discretion whether or not to carry out a review under para 18A, explain why they do not accept the grounds on which it is argued that they should carry out such a review, they would be taking a new appealable decision. A review is typically a much fuller process, involving fresh rounds of submissions and possible further evidence. It seems to me that a gatekeeping letter refusing to open the gate to a review is conceptually not the same as the review itself.”
“We agree with the Divisional Court that the present case falls clearly on the same side of the line as Begum and Ali as opposed to the Tsfayo side of the line. The decision is one which requires the exercise of judgment and a particular expertise. While factual decisions are required to be made they are, in Lord Bingham’s phrase ‘staging posts on the way to the much broader judgments which the authority had to make.’ In making her decision the Secretary of State is obliged under domestic public law to act fairly, and the court on judicial review can quash her decision if she does not. Of course, what fairness requires in relation to disclosure may be affected by the national security context, just as it is under EU law. Conventional judicial review is a flexible remedy which can extend to investigation of the factual basis of a decision, where appropriate, without assuming an independent fact-finding role. We are satisfied that the adherence of the Divisional Court to conventional standards of judicial review met the needs of this particular case…”