Police Offences Act 1935

If a police officer has reasonable grounds to believe that a person who is in a public place is contravening, or has contravened, section 6A(14) or (15), the police officer may, using such force, means and assistance as is reasonably necessary – detain that person and search the person, including any clothing of the person; and stop and detain any vehicle in or on which the person is, or was when the provision was being contravened, and search the vehicle and any container found in or on the vehicle; and seize any item, found during a search under this subsection, that the police officer is of the opinion is a prohibited item within the meaning of section 6A(1).

On conviction of a person of an offence against section 6A(14) or (15), any prohibited item, within the meaning of section 6A(1), to which the offence relates that is lawfully in the possession of the Crown is forfeited to the Crown.