"Offences and penalties
9.—(1) A person who— (a)without reasonable excuse contravenes a requirement in regulation 4, 5, 7 or 8, or (b)contravenes a requirement in regulation 6, commits an offence.
Fixed penalty notices
10.—(1) An authorised person may issue a fixed penalty notice to anyone that the authorised person reasonably believes—
(a)has committed an offence under these Regulations; "
https://www.legislation.gov.uk/uksi/2020/350/pdfs/uksi_20200350_en.pdf