The thing to ask yourself is, Am I acting in a way that would make people feel in danger, Am I acting in a way that a Policeman/woman would feel obliged to stop and search me.
If you are acting in a normal way, and any knives or axes are not in sight, packed away in your pack, then the chance of being stopped is minimal.
If by chance you are stopped, and you can give a reasonable excuse why you are carrying a knife or axe, then you will not have a problem, and of course the other thing to remember is your demeanour, if you start arguing, or start shouting that you are entitled to carry knives etc, then the chances are you are in trouble, be smart be dumb.