Controversial ... or what? The H-word is bound to cause rows whenever any group of cyclists get together in any country where their use has been widely promoted.

Yet look at Holland and Denmark ... surely if helmets were a real benefit every one of the millions of cyclists there would have a polystyrene hard hat.

CCC's takes the view that the jury is still out: there are incidents where a helmet might save you, and incidents where they will make matters worse. Visit the Bicycle Helmet Research Foundation to make up your own mind.