“6.— Declaration permitting closed material applications in proceedings (1) The court seised of relevant civil proceedings may make a declaration that the proceedings are proceedings in which a closed material application may be made to the court. (2) The court may make such a declaration— (a) on the application of— (i) the Secretary of State (whether or not the Secretary of State is a party to the proceedings), or (ii) any party to the proceedings, or (iii) of its own motion. (3) The court may make such a declaration if it considers that the following two conditions are met. (4) The first condition is that— (a) a party to the proceedings would be required to disclose sensitive material in the course of the proceedings to another person (whether or not another party to the proceedings), or (b) a party to the proceedings would be required to make such a disclosure were it not for one or more of the following— (i) the possibility of a claim for public interest immunity in relation to the material, (ii) the fact that there would be no requirement to disclose if the party chose not to rely on the material, (iii)section 17(1) of the Regulation of Investigatory Powers Act 2000 (exclusion for intercept material), (iv) any other enactment that would prevent the party from disclosing the material but would not do so if the proceedings were proceedings in relation to which there was a declaration under this section. (5) The second condition is that it is in the interests of the fair and effective administration of justice in the proceedings to make a declaration. (6) The two conditions are met if the court considers that they are met in relation to any material that would be required to be disclosed in the course of the proceedings (and an application under subsection (2)(a) need not be based on all of the material that might meet the conditions or on material that the applicant would be required to disclose). (7) The court must not consider an application by the Secretary of State under subsection (2)(a) unless it is satisfied that the Secretary of State has, before making the application, considered whether to make, or advise another person to make, a claim for public interest immunity in relation to the material on which the application is based. (8) […] (9) […] (10) […] (11) In this section— “closed material application” means an application of the kind mentioned in section 8(1)(a), “sensitive material” means material the disclosure of which would be damaging to the interests of national security.” (a) on the application of— (i) the Secretary of State (whether or not the Secretary of State is a party to the proceedings), or (ii) any party to the proceedings, or (iii) of its own motion. (a) a party to the proceedings would be required to disclose sensitive material in the course of the proceedings to another person (whether or not another party to the proceedings), or (b) a party to the proceedings would be required to make such a disclosure were it not for one or more of the following— (i) the possibility of a claim for public interest immunity in relation to the material, (ii) the fact that there would be no requirement to disclose if the party chose not to rely on the material, (iii)section 17(1) of the Regulation of Investigatory Powers Act 2000 (exclusion for intercept material), (iv) any other enactment that would prevent the party from disclosing the material but would not do so if the proceedings were proceedings in relation to which there was a declaration under this section. “closed material application” means an application of the kind mentioned in section 8(1)(a), “sensitive material” means material the disclosure of which would be damaging to the interests of national security.”
“…[the s.6 material documents] are all centrally relevant to the claim because: (a) They refer to events concerning the First and/or Second Claimant in the period of the core narrative set out in the Amended Particulars of Claim, at §§ 40 to 77. (b) They are also relevant to key aspects of the Claimants’ narrative: (i) the allegations of the First Claimant’s arrest and detention in China. (ii) allegations of the Claimants’ travel to and detention in Malaysia. (iii) Claimants’ allegations concerning their travel to and detention in Bangkok. (iv) Claimants’ allegations concerning their travel to and detention in Libya.” (a) They refer to events concerning the First and/or Second Claimant in the period of the core narrative set out in the Amended Particulars of Claim, at §§ 40 to 77. (b) They are also relevant to key aspects of the Claimants’ narrative: (i) the allegations of the First Claimant’s arrest and detention in China. (ii) allegations of the Claimants’ travel to and detention in Malaysia. (iii) Claimants’ allegations concerning their travel to and detention in Bangkok. (iv) Claimants’ allegations concerning their travel to and detention in Libya.”
“[19] […] [If] the court, on the other hand, was to adopt the view that the Secretary of State is entitled to draw the lines of defence for the purpose of section 6 just where he or she pleases without any judicial control, this could open the door to a situation where the Secretary of State may obtain a section 6 declaration simply because he or she is willing to introduce sensitive material, even though it might not strictly be needed for the purpose of her defence. [20] It therefore appears to the court that it needs to strike a balance and that this should involve it considering whether the Secretary of State’s defence is arguable and whether the introduction of sensitive material as part of it is legitimate and necessary, rather than just being convenient.”