Court of Appeal (Criminal Division) · Lord Judge CJ gave the judgment of the court
Facts
Three appeals were heard together, each from a conviction for murder at the Crown Court in which loss of control was in issue. Clinton killed his wife after she told him of an affair and taunted him; the trial judge withdrew the loss of control defence from the jury. Parker and Evans were also convicted of murder in separate cases in which sexual infidelity featured as part of the background.
History
All three appellants were convicted of murder in the Crown Court. They appealed to the Court of Appeal against conviction, arguing that the trial judges had misdirected the jury on the loss of control defence.
Issue
Whether sexual infidelity can amount to a qualifying trigger for loss of control under sections 54 and 55 of the Coroners and Justice Act 2009; how the objective test of a person with a normal degree of tolerance and self-restraint should be applied; whether the defence should have been left to the jury in each case.
Held
Clinton's appeal was allowed, the conviction for murder quashed and a retrial ordered, because the trial judge should have left loss of control to the jury. The appeals of Parker and Evans were dismissed. Sexual infidelity cannot by itself be a qualifying trigger but may be considered as part of the circumstances in which another qualifying trigger arose.
Ratio
- Under the Coroners and Justice Act 2009, sexual infidelity is expressly excluded as a standalone qualifying trigger for loss of control, though it may be taken into account as part of the factual matrix. The jury must decide whether a person of the defendant's age and sex with a normal degree of tolerance and self-restraint might have reacted in the same or similar way, disregarding voluntary intoxication.
The judgments
Lord Judge CJ (lead)
Delivered the single judgment of the court. Interpreted sections 54 and 55 of the 2009 Act, holding that Parliament intended to exclude sexual infidelity as a qualifying trigger while allowing it to form part of the context. Clarified the objective test and the judge's role in deciding whether the defence should go to the jury.
Key reasoning
- Section 55(6)(c) expressly provides that sexual infidelity is to be disregarded as a qualifying trigger, reflecting a policy choice to prevent the defence being used in jealousy killings.
- The exclusion is not absolute; sexual infidelity may be part of the circumstances that constitute a qualifying trigger under section 55(3) or (4), such as things said or done of an extremely grave character causing a justifiable sense of being seriously wronged.
- The objective test in section 54(1)(c) requires the jury to consider a person of the defendant's age and sex with a normal degree of tolerance and self-restraint, but not to attribute to that person the defendant's voluntary intoxication or other voluntary characteristics.
- The judge must withdraw the defence from the jury if there is no evidence on which a properly directed jury could conclude that the defence might apply.
Obiter
- The court indicated that the loss of control defence is narrower than the old provocation defence and that the judge has a gatekeeping role to prevent the defence being put to the jury on insufficient evidence.
Where it fits in the module
This case is central to Topic 2 (Homicide) on partial defences to murder. It illustrates the statutory replacement of provocation by loss of control under the Coroners and Justice Act 2009, engaging with the exclusion of sexual infidelity as a qualifying trigger and the reformulated objective test. It can be contrasted with provocation under the Homicide Act 1957 as developed in Camplin and Holley, and it was applied in later Court of Appeal decisions such as Dawes, Hatter and Bowyer.
Criticisms
- The categorical exclusion of sexual infidelity as a qualifying trigger may be too rigid and fail to account for contexts of coercive control or domestic abuse where infidelity is used as a tool of humiliation.
- The objective test's reference to ordinary tolerance and self-restraint remains vague and may lead to inconsistent jury decisions, especially when applied to defendants with mental health conditions.
- The distinction between sexual infidelity as a trigger versus as context is difficult to apply in practice and may invite artificial jury directions.
- The decision may undervalue the psychological impact of betrayal in intimate relationships, effectively privileging a narrow view of 'serious wrong'.
Written with AI (nvidia/nemotron-3-ultra-550b-a55b) on 1 November 2026, reviewed for errors by a second model (claude-sonnet-5.5 (Claude Code reviewer)). Read the case itself on Find Case Law. Spotted an error? Tell us.