I think any of us who drive or cycle have at some point in the past and probably will again in the future, have broken one of the many traffic laws. Be that not completely slowing to the speed limit until after we have passed the sign, or perhaps not coming to a complete halt (hand brake or not) at a mandatory stop junction for example. Anyone who says they haven't is just lying to themselves. However, the overwhelming majority of us will do this very infrequently, so although in one sense Cyril is probably right that all motorists brake the law, he probably needs to go further and acknowledge that ALL road users break the law.
But these are not deliberate acts in the same way as say, passing through a red light. That is deliberate and from my own unscientific observations of the Cornish roads, a much rarer occurrence here. Obviously I can't speak for other parts of the Country. Sadly, the last time I saw somebody jump a red light, about a month ago, it was a cyclist.
All we can do is be careful and try to treat others on the road the way we would wish to be treated, whether we are walking a dog, cycling, or driving a big lorry.