Summary Offences Act 1953

A person is an exempt person for the purposes of an offence of use or possession of a prohibited weapon under section 21F(1)(b) of this Act if the person uses or has possession of a prohibited weapon for the purpose, and in the course, of dealing with an emergency (whether as a volunteer or in the course of paid employment), provided that the person does not use the weapon to threaten or injure another person.