A person is not criminally responsible for their conduct if the person carries out the conduct constituting the offence in self-defence. A person will be held to have carried out the conduct in self-defence if the person believes the conduct is necessary:
- To defend himself or herself or another person; or
- To prevent or terminate the unlawful deprivation of his or her liberty or the liberty of another person; or
- To protect property from unlawful taking, destruction, damage or interference; or
- To prevent criminal trespass to any land or premises or to remove a person committing any such criminal trespass.
And the conduct is a reasonable response in the circumstances as he or she perceives them.
The test for self-defence poses a two-limb test.
The first limb of the test is whether there is a reasonable possibility that the Accused person believed that his or her conduct was necessary in order to defend himself or herself. It is determined from a completely subjective point of view considering the personal characteristics of the accused at the time they carried out the conduct. In other words, it involves considering what the Accused person was actually thinking. Intoxication is relevant to an assessment of the Accused person’s subjective belief.
The second limb of the test is determined by an entirely objective assessment of the proportionality of the Accused Person’s response to the situation the accused subjectively believed they faced. In other words was the conduct of the Accused person a reasonable response in the circumstances as he or she perceived them.
In considering whether or not the response of the Accused person was reasonable to the situation as he or her perceived it, some factors particular to the Accused person may be taken into account. These include the surrounding physical circumstances in which the accused acted as well as age, gender and health.
Once an Accused person raises self-defence, the prosecution must prove that the accused was not acting in self-defence beyond a reasonable doubt.