(1) An improvement notice given to a person by an authorised officer who is a police officer may be revoked, by giving notice of the revocation to the person, by—
(a) the relevant police commissioner; or
(b) an authorised officer who—
(i) is a police officer; and
(ii) has the relevant police commissioner's written authority to issue improvement notices under this Division; and
(iii) is more senior in rank to the police officer who gave the notice to the person.
(2) An improvement notice given to a person by an authorised officer who is not a police officer may be revoked by the Regulator by giving notice of the revocation to the person.
(3) Section 23 of Schedule 1 does not apply in relation to the revocation of the improvement notice.