Settle an argument - bike helmet history in the UK

I had a tuff top in the late 80s, didn’t wear it though was uncomfortable and looked daft.

Got a Specialized mtb helmet with a peak in the mid to late 90d because they were compulsory on club rides, only went on one of them though so didn’t get much use. Even after I knocked myself out in a crash.

I watched Chainspotting again recently and the amount of helmetless riding in that was jarring these days, looked really weird seeing people jumping and riding in the woods without helmets.

Road cycling wise I don’t think they were compulsory up and down until Andrew Killiev (sp?) in 2006 I think. CBA to google it, feels like cheating.