Section 30: Prejudice to effective conduct of public affairs

When disclosure would substantially prejudice the effective conduct of public affairs.

Public affairs and “space to think”#

Section 30 of FOISA is one of the most important and most contested exemptions in Scottish FOI. It protects information where disclosure would harm the effective conduct of public affairs - including the free and frank exchange of advice and views within public authorities.

In plain terms#

The authority is arguing that releasing this information would damage its ability to conduct its business effectively. Most often, this means they’re saying that officials need to be able to give candid advice and debate options openly, and that making those discussions public would stop people being honest in future. You’ll sometimes see it called the “space to think” exemption.

A health board refuses to release internal emails where senior managers discussed options for closing a local ward. They argue under section 30(b) that disclosure would inhibit the free and frank exchange of views. The question is whether releasing those emails would genuinely stop managers being candid next time, or whether the authority just finds the content uncomfortable.

The legal detail#

Section 30 exempts information where disclosure would, or would be likely to:

(a) prejudice substantially the maintenance of the convention of collective responsibility of the Scottish Ministers
(b)(i) inhibit substantially the free and frank provision of advice
(b)(ii) inhibit substantially the free and frank exchange of views for the purposes of deliberation
(c) otherwise prejudice substantially the effective conduct of public affairs

Each limb requires a different kind of harm. Section 30(a) protects the convention that Scottish Ministers publicly support collective Cabinet decisions, even if they disagreed privately. Section 30(b) protects internal advice and deliberation. Section 30(c) is a broad catch-all.

The harm tests are specific. For section 30(a) and 30(c), the test is substantial prejudice - the harm must be real and significant, not trivial or speculative. For section 30(b), the test is substantial inhibition - the authority must show that disclosure would genuinely restrain officials from giving frank advice or exchanging honest views in future.

Unlike section 29, section 30 is not class-based. The authority must look at the content of the information and assess whether releasing it would actually cause the claimed harm. The Court of Session confirmed this in Scottish Ministers v Scottish Information Commissioner [2007] CSIH 8, ruling that authorities can’t simply classify types of documents as falling within section 30 without examining the specific content.

Absolute or qualified?#

This exemption is qualified. The public interest test applies to every limb. Even if the authority can show substantial prejudice or inhibition, it must still demonstrate that the public interest in withholding outweighs the public interest in disclosure.

See What can they refuse? for more on how the public interest test works.

How it’s used in practice#

Section 30(b) is the limb you’re most likely to encounter. Authorities across Scotland use it to withhold internal advice, options papers, discussion documents, and draft reports. It’s not limited to the Scottish Government - councils, NHS boards, universities, and other public bodies all rely on it.

This is also the exemption that the Commissioner overturns most frequently. The “chilling effect” argument - that officials will stop being honest if they think their views might be published - often fails to persuade. The Commissioner does not accept that disclosure in one case automatically inhibits candour in all future cases. Officials are professionals. The Commissioner believes they’re capable of continuing to give frank advice even when they know some of it may eventually be released.

Timing is one of the most important factors. While a decision is being actively considered, there may be a genuine case for protecting the space to deliberate. Once the decision is taken, the balance shifts. The authority has had its space to think. The public interest in understanding how and why the decision was made grows stronger, while the interest in protecting the deliberative process weakens.

Section 30(c) is the catch-all. Authorities sometimes use it when they can’t fit their refusal under another limb but still want to argue that disclosure would harm the way they conduct their business. The Commissioner applies this limb cautiously, because it could otherwise become a blanket excuse for withholding anything inconvenient.

Section 30(a), protecting collective ministerial responsibility, is rarely used and applies only to the Scottish Government.

How to challenge it#

Has the decision been taken? This is your strongest line of argument. If the matter the information relates to has been decided, say so. Cite any public announcement, published decision, or policy statement that confirms the process is complete. Argue that the purpose of the exemption has been served and the public now has a legitimate interest in understanding the decision-making process.

Is the claimed harm specific? The refusal letter should explain what harm disclosure would cause and why it would be substantial. Vague references to a “chilling effect” or “safe space” aren’t enough. If the authority hasn’t explained how releasing the specific information you asked for would inhibit future candour, point this out.

Look at what was disclosed. Authorities sometimes release some documents from a discussion while withholding others under section 30. Compare what you received with what was withheld. If they’ve already disclosed parts of the same discussion, it’s hard to argue that releasing more would cause substantial inhibition.

Check the public interest reasoning. The refusal letter should set out arguments for and against disclosure. If it only lists reasons for withholding without acknowledging the public interest in transparency, accountability, or public debate, the test hasn’t been properly applied.

See What to do if refused for the full process.

You can also use our interactive challenge tool for this exemption to work through these questions step by step and draft a review request.

Good to know: Section 30 generally cannot apply to information more than 15 years old. The authority can use section 30 to neither confirm nor deny whether it holds the information, but only if the information (if held) would be exempt under section 30 and revealing whether it exists would be contrary to the public interest (section 18). Any Scottish public authority can rely on section 30 - unlike section 29, which is limited to the Scottish Administration.