Council of Civil Service Unions v. Minister for the Civil Service [1985]

[1985] AC 374 · House of Lords · United Kingdom

administrative lawadministrative lawconstitutional law

Issue

Are exercises of prerogative power in principle reviewable, and did the union have a procedural fairness claim?

Held

Prerogative powers are in principle reviewable, but the national security context defeated the challenge on the facts.

Exam use

Review the ratio and reasoning before applying this case in problem questions.

Summary

The GCHQ case is a foundational modern statement of reviewability, legitimate expectation, and constitutional restraint.

Facts

The Government removed trade union membership rights at GCHQ through an exercise of prerogative power, citing national security concerns.

Issue

Are exercises of prerogative power in principle reviewable, and did the union have a procedural fairness claim?

Held

Prerogative powers are in principle reviewable, but the national security context defeated the challenge on the facts.

Ratio Decidendi

The source of public power does not by itself immunise executive action from judicial review; justiciability and context remain critical.

Reasoning

The House of Lords focused on the subject matter rather than the source of power. Review was available where the matter was justiciable, yet courts would remain institutionally cautious where national security made adjudication inappropriate.

Essay-Ready Explanation Generator

Version 1 of 4

Reference to Council of Civil Service Unions v. Minister for the Civil Service ([1985] AC 374) strengthens a administrative law answer because the case reflects the principle that The source of public power does not by itself immunise executive action from judicial review; justiciability and context remain critical. Applied to a problem question, the case should be used after identifying the issue as Are exercises of prerogative power in principle reviewable, and did the union have a procedural fairness claim? The stronger essay move is to connect the material facts to the court's holding, then explain whether the present facts support the same conclusion or justify distinguishing the authority.

Significance

The GCHQ case is a foundational modern statement of reviewability, legitimate expectation, and constitutional restraint.

Related Cases

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Exam Tips

Review the ratio and reasoning before applying this case in problem questions.

Revision Checklist

  • Name the issue before discussing facts so the marker sees the legal question immediately.
  • State the holding in one sentence, then use the ratio to explain why the court reached that result.
  • Use the citation and jurisdiction to show why this authority matters for the problem you are answering.
  • Pair this case with one supporting or contrasting authority if the question tests limits, policy, or exceptions.

Sources