The Consensual Fight That Went Wrong

The best fit is s.4, causing serious harm. The actus reus is that Ronan assaulted Stefan and thereby caused serious harm. 'Serious harm' includes injury that causes substantial loss or impairment of bodily function. Permanent double vision and a fractured orbital bone, described in the report as substantial impairment of visual function, comfortably meet that threshold. The mens rea for s.4 is intention or recklessness as to causing serious harm. Ronan deliberately struck a vulnerable area - the eye - with a hard weapon. A jury could readily infer that he foresaw the risk of serious injury and went ahead anyway, which is recklessness. Section 3, assault causing harm, is a lesser offence and would be available if the jury were not satisfied that the harm was serious or that Ronan had the required mens rea for s.4. Section 2 assault is too low-level because actual harm was caused. The charge should therefore be s.4, with s.3 as an alternative.

Consent can be a defence to some assaults, but it is not a free-standing licence to cause harm. The 1997 Act and the case law recognise limited exceptions, such as properly conducted surgery, lawful sport and ordinary horseplay. A pre-arranged fight to settle a debt is not one of those exceptions. Even if the fight had remained a fist fight, the courts are slow to treat consensual violence in a public place as lawful because it risks a breach of the peace and serious injury. The public car park setting therefore reinforces the prosecution case: this was not a regulated sporting contest with proper safeguards. In any event, Stefan's consent was limited to 'no weapons, fists only'. Ronan's use of a concealed knuckleduster went beyond the scope of any consent given. Consent obtained by deception about the weapon, or exceeded in this way, does not cover the injury actually inflicted. Stefan's consent is therefore not a defence to s.4.

Ronan's voluntary consumption of six cans of lager does not give him a general defence. Self-induced intoxication is not a defence to offences of basic intent, and it cannot be used to excuse reckless violence. The position is more nuanced for offences requiring a specific intent or a particular foresight. If s.4 requires proof that Ronan intended or was reckless as to serious harm, the jury may consider his intoxication when deciding what he actually foresaw. But voluntary intoxication is not a defence if the offence can be committed recklessly and the defendant would have foreseen the risk had he been sober. Striking someone in the eye with a knuckleduster is inherently dangerous, and his claim that he did not realise it would cause serious injury is unlikely to succeed. The intoxication may be relevant to sentence or to the jury's assessment of his state of mind, but it does not provide a route to acquittal on these facts.