http://www.legislation.gov.uk/ukpga/1972/20/section/33/enactedRoad Traffic Act 1972Road traffic offencesVehiclesRoad safetyDriving licencesHeavy goods vehiclesKing's Printer of Acts of Parliament2019-12-02 PART I 33 1 The Secretary of State may make regulations prescribing (by reference to shape, construction or any other quality) types of helmet recommended as affording protection to persons on or in motor cycles, or motor cycles of different classes, from injury in the event of accident. 2 If a person sells, or offers for sale, a helmet as a helmet for affording protection as aforesaid, and the helmet is neither— a of a type prescribed under this section, nor b of a type authorised under regulations made under this section and sold or offered for sale subject to any conditions specified in the authorisation, he shall, subject to subsection (3) below, be guilty of an offence. 3 A person shall not be convicted of an offence under this section in respect of the sale or offer for sale of a helmet if he proves that it was sold or, as the case may be, offered for sale for export from Great Britain. 4 In England or Wales the council of a county, of a borough or of an urban district, the Greater London Council or the Common Council of the City of London may institute proceedings for an offence under this section. 5 The provisions of Schedule 1 to this Act shall have effect in relation to contraventions of this section. 6 In this section and in the said Schedule " helmet" includes any head-dress, and references in this section to selling or offering for sale include respectively references to letting on hire and offering to let on hire.