(1) An appointed PHSO must not exercise a power under this Act unless the officer holds an identity card issued under this Act.
(2) Before exercising a power under this Act in relation to a person, an appointed PHSO must, wherever practicable, produce the identity card for inspection by the person (but the card need only be produced once even though 2 or more powers are exercised against the person).
(3) Non-compliance by an appointed PHSO with subsection (2) is a defence to a charge based on non-compliance by the person to whom the identity card should have been produced with a requirement or request made by the appointed PHSO under this Act.
(4) Subsection (3) applies even if the charge relates to an offence that is an offence of strict liability.