Clark & Anor v The Crown

Factual and Procedural Background

Following a 48-day second trial at the Central Criminal Court, two appellants, both serving police officers at the time, were convicted by majority verdicts on multiple counts related to corruption and drug offences involving the alleged 're-cycling' of drugs or money seized from suspects. They were tried alongside two other officers who were acquitted. The convictions were initially upheld by the Full Court, with subsequent refusals of leave to appeal by the House of Lords and the European Court of Human Rights.

The appellants later appealed against conviction on the basis of substantial non-disclosure by the prosecution, following a reference from the Criminal Cases Review Commission (CCRC). Extensive investigations and hearings took place, including a Public Interest Immunity (PII) hearing, leading to the Court of Appeal allowing the appeals, quashing the convictions, and reserving decision on the application for retrial on certain counts.

Legal Issues Presented

1. Whether the convictions should be quashed due to substantial non-disclosure by the prosecution.
2. Whether it is in the interests of justice to order a retrial on certain counts following the quashing of convictions.
3. Whether the prosecution's conduct in disclosure amounted to gross prosecutorial misbehaviour, affecting the suitability of a retrial.
4. The impact of delay and other factors on the fairness and propriety of ordering a retrial.

Arguments of the Parties

Appellants' Arguments

• The prosecution failed to disclose substantial material (categories II, IV, V, and VI identified by the CCRC) which undermined the credibility of key prosecution witnesses, particularly a resident informant.
• The undisclosed material suggested collusion and falsehood between resident informants, which would have materially affected the jury's verdicts.
• The delay in bringing the appeal and the retrial application, combined with the stress and impact on the appellants' lives and families, weighed against ordering a retrial.
• The prosecution's failure to disclose was deliberate and dishonest, constituting gross prosecutorial misbehaviour that should preclude a retrial.
• The prosecution's decision not to call one key witness at retrial undermined the case for a retrial.
• The appellants faced financial burdens related to legal aid contributions for a retrial.

Respondent's Arguments

• The prosecution accepted serious disclosure errors but denied gross prosecutorial misbehaviour.
• The undisclosed material was intended for disclosure but was overlooked due to administrative error.
• Despite non-disclosure, the evidence against the appellants remained strong, particularly on the counts proposed for retrial.
• The public interest in prosecuting corruption, especially involving police officers, supported ordering a retrial.
• The trial judge would ensure a fair trial despite delay and publicity.
• Any legal aid contributions already paid by the appellants would be refunded and outstanding amounts waived.
• Delay by the prosecution during the CCRC investigation was acknowledged but not sufficient to bar a retrial.

Table of Precedents Cited

Precedent	Rule or Principle Cited For	Application by the Court
R v Easton [1995] 2 Cr.App.R. 469	Guidance on warnings and corroboration regarding unreliable witnesses, particularly in the context of resident informants.	The court applied this precedent to treat key witnesses at the "extreme end" of unreliability, requiring careful jury caution and independent corroboration.
Saunders [1974] 58 Cr App R 248	Considerations regarding ordering retrials after significant delay and the impact on fairness.	The court referenced Saunders in weighing the effects of delay and the appellants' circumstances against ordering a retrial, noting modern procedural developments.

Court's Reasoning and Analysis

The court acknowledged that there was substantial non-disclosure of material which, if disclosed, could have led the jury to reach different verdicts on certain counts. The undisclosed material included evidence suggesting that key prosecution witnesses, who were resident informants, may have colluded to fabricate allegations, undermining their credibility. The prosecution conceded some counts due to this non-disclosure, and the court found the convictions on those counts unsafe.

However, the court also found that the evidence against the appellants on other counts remained strong, particularly concerning allegations of corruption. The court considered the public interest in prosecuting corruption involving police officers and balanced this against the delay, the appellants' age, the sentences already served, and the stress endured. The court found no gross prosecutorial misbehaviour despite serious disclosure errors, noting that the failures appeared to be administrative rather than deliberate.

Regarding retrial, the court noted that procedures now exist to ensure fairness even after significant delay and that the trial judge would have primary responsibility to safeguard a fair trial. The court accepted that the prosecution's failure to disclose was serious but did not justify denying a retrial, especially given the gravity of the offences and the importance of public confidence in the justice system.

Finally, the court considered the admissibility and reliability of post-conviction confessions but did not rely on them in reaching the decision to order a retrial.

Holding and Implications

The Court of Appeal ALLOWED the appeals, QUASHED the convictions, and ORDERED a retrial on counts 10 to 13 against both appellants.

This decision directly affects the appellants by overturning their convictions and providing for a new trial on specified counts. The court emphasized the importance of prosecuting serious corruption offences involving police officers despite the passage of time and procedural difficulties. No new legal precedent was established; rather, the court applied existing principles to balance fairness, public interest, and procedural integrity.