Contribution
My Lords, Amendment 422 relates to the test used to determine whether an officer acted in breach of discipline when he or she used force in self-defence. We come late to this, but it is a very important issue. Currently, the test used in police disciplinary law is the civil law test. Under the current law, an officer must hold an honest belief that they or others are in immediate danger, must use only proportionate and necessary force, and, critically, where their belief is mistaken, their mistake must have been an objectively reasonable one.
The amendment is necessary because, following the police accountability rapid review report, published in October 2025, a recommendation was made to change the legal test to the criminal test. This would allow officers to rely on an honestly held but mistaken belief, even if it was unreasonable. The Government have said they will implement this change through a statutory instrument without public consultation. At this stage, I thank Justince and Inquest for their research on this matter.
The criminal law test, which the Government propose, would allow officers to rely on a mistaken belief, even if it was unreasonable, so long as it was honestly held. I fully understand that officers are under great pressure when faced with possible or actual violence. Split-second decisions must be made on the ground in the immediate context. That is why it is critical that officers are properly trained and managed. However, it is not a good reason to move from the civil to the criminal law test.
This determination arose from a criminal law test where the Supreme Court made a decision in the W80 case, where an officer shot a man. When misconduct proceedings were brought, he claimed he had done so in self-defence. The IOPC recommended to the MPS that the officer should face misconduct proceedings, the MPS declined to initiate those proceedings, and the IOPC wrote to the MPS directing disciplinary proceedings. That decision was challenged by judicial review. The Divisional Court allowed the appellant’s claim. The IOPC appealed to the Court of Appeal, and the appeal was allowed. On further appeal to the Supreme Court, the decision of the Court of Appeal was upheld. In dismissing the appeal, the Supreme Court judges commented:
“This is an area of the law of vital importance to the public and to the police. It is essential that the public and the police should be informed in straightforward terms of the law which applies. We hope that it will now be possible to recast legislation and guidance so as to achieve this result”.
This amendment is not about criminal law, and it is not about whether an officer should be prosecuted for the use of force. It seeks only to provide the clarity that the Supreme Court advocated.
The criminal law test is simply not appropriate for disciplinary proceedings. Applying it would undermine public confidence in the police disciplinary process, weaken accountability and make meaningful scrutiny of police use of force far more difficult. The Home Office’s statutory guidance makes it clear that the disciplinary framework is intended to encourage a culture of learning and development for individuals in the organisation. This focus on learning and development is part of what makes disciplinary procedures distinct from criminal procedures. Misconduct processes are an important and excellent opportunity for forces to identify mistakes, learn from them and prevent recurrence.
The Supreme Court in W80 made clear that the criminal law test conflicts with the fundamental principle of the disciplinary process, which is
“to contribute to learning and development for the individual officer concerned or for the organisation as to the reasonableness of mistakes”.
If the objective reasonableness of an officer’s mistaken belief is no longer relevant, unreasonable beliefs, however dangerous and widespread, may never be identified. Allowing unreasonable but honestly held beliefs to serve as a defence would strip away the incentive to examine, understand and remedy the factors that led officers to hold those beliefs in the first place. For public safety it is essential that unreasonable mistakes and the conditions that enabled them are identified and addressed.
Moreover, the introduction of the criminal law test would risk allowing honestly held beliefs based on prejudice or stereotyping, however unreasonable, to provide a defence following police use of force. Police use of force is continually increasing, with over 812,000 recorded uses in 2024-25, an increase of 9% on the previous year. Police complaints about use of force rarely lead to investigation by the IOPC, because most complaints are referred back to the officer’s force for investigation. Fewer still result in disciplinary proceedings, and hence the opportunity to identify training or management deficiencies to enable institutional learning and improvement is not there.