Self-defence is a complex legal concept that can make or break a criminal case. Understanding when it is a valid argument is crucial for anyone facing charges related to violent incidents, such as Common Assault or Affray.
At Best Sydney Criminal Lawyers, we have seen firsthand how a well-constructed self-defence claim can lead to a full acquittal. This guide explores the key elements of Self Defence Law NSW and how we use it to protect our clients.
What Is Self-Defence in Australian Law?
Statutory Framework: Section 418
In New South Wales, the law is codified in Section 418 of the Crimes Act 1900. It states that a person is not criminally responsible for an offence if the person carries out the conduct believing it is necessary:
- To defend himself or herself or another person; or
- To prevent or terminate the unlawful deprivation of his or her liberty; or
- To protect property from unlawful taking, destruction, damage or interference.
The Two-Limbed Test
For a self-defence claim to stand in court, it must satisfy a two-part test:
- Subjective Test (The Belief): Did the accused genuinely believe their actions were necessary to defend themselves? This considers the accused’s state of mind at the time.
- Objective Test (Reasonableness): Was the response reasonable given the circumstances as the accused perceived them? The law does not expect “perfect” judgment in the heat of the moment, but the force used must not be grossly disproportionate.
The Burden of Proof
Crucially, once you raise the issue of self-defence, the burden of proof lies with the prosecution. They must prove beyond a reasonable doubt that you did not act in self-defence. If they cannot disprove your claim, you must be acquitted.
When Can You Legally Defend Yourself?
Immediate Danger
You do not have to wait until you are physically struck. If you reasonably believe you are about to be harmed—for example, if someone raises a fist or threatens you with a weapon—you are entitled to strike first (pre-emptive strike) to protect yourself.
Protecting Others and Property
Self Defence Law NSW extends beyond personal safety. You can intervene to protect a family member, friend, or even a stranger from an attack. You can also use reasonable force to stop someone from stealing or damaging your property, though the acceptable level of force is generally lower than when defending a person.
Proportional Response
The force used must be proportional. For example, if someone pushes you, shooting them would likely be considered unreasonable and excessive. However, if an attacker lunges at you with a knife, using a weapon to defend yourself may be considered reasonable.
Navigating the Complexities of Self-Defence
The Duty to Retreat
Unlike some US jurisdictions, Australia does not have a strict “stand your ground” law, nor does it have a specific “duty to retreat.” However, whether or not you could have easily walked away is a factor the jury will consider when deciding if your use of force was “reasonable.”
Excessive Force (Section 421)
What happens if you genuinely believed you needed to defend yourself, but the jury decides you went too far? Under Section 421, if you used excessive force that inflicted death, you may be acquitted of murder but convicted of manslaughter. This acts as a partial defence.
Intoxication
Alcohol and drugs complicate matters. Under the law, your level of intoxication is generally not taken into account when determining if your response was reasonable. The standard remains that of a “reasonable sober person.”
Final Thoughts
Self-defence is not a loophole; it is a fundamental right. However, proving it requires a sophisticated legal strategy that contextualises your actions against the threat you faced.
At Best Sydney Criminal Lawyers, we work with leading barristers and experts (often collaborating with firms like Jameson Law for complex matters) to ensure your side of the story is told.
If you have been charged after defending yourself, do not speak to the police. Contact us immediately.
