What helmets are legal to use?
Only motorcycle helmets (don’t laugh, I’ve seen pillions riding through London ranging from no helmet to an American Football helmet)! Legal to sell and legal to use are two different things. Legal to sell are BS 6658 and ECE R 22-05. There is also a provision for helmets which comply with any standard accepted by an EEA State which offers a level of protection which is equivalent to (i.e. the same as, or better than) British Standard BS 6658:1985 and are marked with a certification mark which is equivalent to the British Standard ‘kitemark’. Legal to use are those as above and formerly legal standards (i.e. the law isn’t retrospective).