Hamilton & Ors v Post Office Ltd [2021] EWCA Crim 577 (23 April 2021)

Hamilton & Ors v Post Office Ltd [2021] EWCA Crim 577 (23 April 2021)

The convictions of the majority of appellants are unsafe because the reliability of the Horizon system was essential to the prosecution, and there were material failures by POL in investigation and disclosure, depriving the appellants of a fair trial. In a subset of cases, the prosecutorial misconduct was so...

Source-derived case information.

Citation
[2021] EWCA Crim 577
Parties
Appellants: Josephine Hamilton & Others; Respondent: Post Office Limited
Jurisdiction
England and Wales
Judgment Date
23 April 2021
Procedural Posture
Criminal Appeal / Court of Appeal (criminal Division) Judgment on Appeal From Convictions Referred by the Criminal Cases Review Commission
Outcome
Appeals allowed; convictions quashed for all appellants except three (subject to further findings).
Legal Topics
Disclosure Obligations, Abuse of Process, Unsafe Convictions, Reliability of Evidence, Private Prosecutions, Fair Trial Rights, Computer Evidence, Miscarriage of Justice
Criminal Law Criminal Procedure Evidence Abuse of Process Disclosure Obligations Unsafe Convictions Reliability of Evidence Private Prosecutions +3 more

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Parties

Josephine Hamilton & Others

Appellants

Post Office Limited

Respondent

Procedural Posture

Criminal Appeal / Court of Appeal (criminal Division) Judgment on Appeal From Convictions Referred by the Criminal Cases Review Commission

  1. 1 Whether the convictions of the appellants were unsafe due to failures in investigation and disclosure by the Post Office Limited (POL) regarding the reliability of the Horizon computer system.
  2. 2 Whether the prosecutions constituted an abuse of process (category 1: impossibility of fair trial; category 2: affront to public conscience).
  3. 3 Whether POL failed to comply with its duties under the Criminal Procedure and Investigations Act 1996 (CPIA) and Article 6 ECHR.

Ratio Decidendi

The convictions of the majority of appellants are unsafe because the reliability of the Horizon system was essential to the prosecution, and there were material failures by POL in investigation and disclosure, depriving the appellants of a fair trial. In a subset of cases, the prosecutorial misconduct was so egregious as to amount to an affront to the public conscience (category 2 abuse).

Court Disposition

Appeals allowed; convictions quashed for all appellants except three (subject to further findings).

Orders

  • Convictions of 39 appellants quashed on grounds of category 1 abuse (unfair trial).
  • Convictions of 4 appellants quashed on grounds of both category 1 and category 2 abuse (affront to public conscience).