The Authorities
9.Decisions directly on point have been surprisingly scarce. There has not yet been a case where a Court has found both that a cyclist has been at fault in not wearing a helmet and that this fault has made any difference. Were such a case to arise the maximum deduction should be 15% in accordance with Froom (“a good deal less severe”) since it is hard to imagine a case where injury would be avoided altogether (25%).
10.There are differing decisions (both first instance High Court) as to whether a cyclist is at fault in not wearing a helmet.