R (Corner House Research) v Director of the Serious Fraud Office [2008] UKHL 60; [2009] 1 AC 756
Facts
The Serious Fraud Office investigated allegations of corruption connected with BAE Systems and arms dealings with Saudi Arabia. As investigators pursued financial evidence, Saudi representatives threatened to withdraw cooperation on counter-terrorism. The Director received advice that this could create serious risks to British lives and decided to stop the investigation. Corner House Research and another claimant sought judicial review. The Divisional Court held the decision unlawful, considering that the Director had yielded to pressure. The Director appealed, requiring the House of Lords to examine the limits of prosecutorial discretion in those circumstances.
Legal Issue
Was the Director's decision to discontinue the investigation unlawful because it responded to a foreign threat, or could the assessed risk to lives lawfully determine the exercise of his discretion?
Held
The House of Lords allowed the Director's appeal. The decision fell within his lawful discretion on the evidence and circumstances before him. He had assessed the competing public interests, including the serious threat to life, and had not simply transferred his statutory responsibility to another person. The court recognised the importance of prosecutorial independence and the rule of law, but rejected the proposition that the foreign threat made the decision unlawful regardless of those consequences. The result does not give overseas governments a general power to stop British investigations. It concerns the legality of this Director's judgment under exceptional and substantiated national-security pressure.
⭐ Legal Principle
An independent prosecutor's discretion remains reviewable but can lawfully take account of serious threats to life and national security. Responding to external pressure is not necessarily an unlawful surrender of discretion where the decision-maker independently assesses relevant consequences within their statutory powers.
Significance
The decision illustrates the tension between prosecutorial independence, public safety and judicial restraint. It should be used carefully in rule-of-law essays: the House of Lords did not treat the Director's discretion as unlimited or approve pressure as a normal basis for abandoning investigations. The point is that the legality of the response required analysis of the statutory function, the evidence and the decision actually taken. A court's disagreement with the merits is not itself a ground of review.
Common exam questions about this case
Did the House of Lords hold that the Director was beyond judicial review?
No. His discretion remained subject to legal limits, including proper purpose, relevant considerations and independent judgment. The court upheld this particular decision because the assessed threat to life could lawfully be weighed. Reviewability and the intensity of scrutiny should not be confused with an automatic finding of unlawfulness.
Why did the foreign threat not make the decision automatically unlawful?
The Director had to evaluate the consequences for public safety and exercised his own judgment about them. The House of Lords considered that the statutory discretion permitted that assessment. The existence of improper pressure from outside did not alone establish that his response exceeded his lawful powers.
How can this case support a rule-of-law essay?
It presents a difficult conflict between resisting pressure on criminal investigations and protecting lives. Explain both the Divisional Court's concern and the House of Lords' final reasoning. Avoid claiming that either national security or prosecutorial independence mechanically resolves every case without examining the decision and its legal basis.