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FOI full exemptions guidance

Section 26 - Defence

Chapters: 01 | 02 | 03 | 04 | 05

Chapter 01: The exemption under section 26

Stating the exemption

Section 26 of the Freedom of Information Act provides that:

  1. "Information is exempt information if its disclosure would, or would be likely to, prejudice-
    • (a) the defence of the British Islands or of any colony, or
    • (b) the capability, effectiveness or security of any relevant forces.
  2. In subsection (1)(b) "relevant forces" means-
    • (a) the armed forces of the Crown, and
    • (b) any forces co-operating with those forces,
    or any part of those forces.
  3. The duty to confirm or deny does not arise if, or to the extent that, compliance with section 1(1)(a) would, or would be likely to, prejudice any of the matters mentioned in subsection (1)."

General Points: explanation of key terms

1.1 In order to understand what information falls within the scope of the defence exemption it is necessary to clarify the meaning of some of the key terms used above.

1.2 Defence: is achieved by maintaining the ability to use military force in support of legitimate political objectives, in particular the protection of the UK, overseas territories and national interests. Defence can therefore include self-defence, as well as measures taken in conjunction with other countries or under the auspices of an international organisation. Such measures may include steps for the detection, prevention and suppression of aggressive activities of any foreign state or party against the UK, overseas territories and national interests, and may include counter terrorist and resilience measures

1.3 The British Islands: is defined in Schedule 1 to the Interpretation Act 1978 as meaning the United Kingdom, the Channel Islands and the Isle of Man.

1.4 Colony: is defined in the same Act as meaning any part of Her Majesty's dominions outside the British Islands except for a Commonwealth country, a territory whose external relations is the responsibility of a country other than the UK, and any associated state. The current list of colonies is as follows:

1.5 Capability: Capability involves having the necessary skills to operate in a particular situation. In relation to defence it is derived from having trained manpower, serviceable equipment, the supporting systems and information needed to deploy to and conduct operations that meet the policy objectives set by government.

1.6 Effectiveness: Effectiveness relates to the successful use of defence capability. This requires a readiness to undertake operations in a structured way that is appropriate to the situation, in conjunction with government departments and, where appropriate, other states and international organisations.

1.7 Security: Security is achieved through the protection of the armed forces from attack, both at a collective and at an individual level, and from the threat of compromise to the confidentiality, integrity and/or availability of defence assets.

1.8 Relevant Forces: This has two components

  1. The armed forces of the Crown means any member or part of the regular or reserve naval, land and air forces of the United Kingdom. This includes the Special Forces [footnote 1] and any unit or part of a unit of the armed forces which is for the time being required by the Secretary of State to assist the Government Communications Headquarters in the exercise of its functions. However, it should be noted that the Special Forces and such units are not part of the Armed Forces when that term is defined as a public authority for the purpose of compliance with the Act (Schedule 1, Paragraph 6). Additionally, information which was directly or indirectly supplied by or relates to any of the Special Forces or a unit or part of a unit assisting the Government Communications Headquarters is exempt information under section 23 of the Act.
  2. Forces co-operating with the armed forces of the Crown would include any member or part of any foreign armed force involved in collective defence arrangements with the UK (for example under the auspices of NATO or under a UN mandate), and any forces that are co-operating on a specific military operation or exercise (e.g. under the auspices of the EU or a UN peace keeping mission). It is therefore something that could change depending on the prevailing circumstances. If forces are acting in co-operation with the armed forces of the Crown at any particular time this will, however, be a matter of fact. The key consideration will be whether the disclosure of information relating to that co-operation would or would be likely to affect the capability, effectiveness or security of the foreign force.

Footnotes:

  1. "The special forces'" means those units of the armed forces of the Crown the maintenance of whose capabilities is the responsibility of the Director of Special Forces or which are for the time being subject to the operational command of that Director. (FOI Act 2000, section 84 )


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