Why is it shame on a club? Itās not illegal and I doubt the club has a compulsory helmet rule. I rode with Newbury road club 20 years ago and the only time I wore a lid was at criterium races on private ground, I think they insisted not the club. I did TT.s many club rides and training runs without one as did everyone else. The only lid I saw was a aero one on a guy who had a low pro bike. I,ve just retired as a postie who did 22 yrs many on a bike without a lid until they insisted we wore them out and back to the delivery. Now I only wear one when out on the MTB as I,m tall and tend to find low branches and the greater risk of an off makes it sensible, I suppose it makes a difference that in my 63 yrs I,ve never banged my head any time I,ve fallen off!