A torch is fine to carry here (Australia), or a pen for that matter, but the moment you carry a 'tactical' torch or a 'tactical' pen it becomes a legal grey area. They can be classified as weapons. Knives here are totally out of the question unless you have a legitimate reason to be carrying one. Self defence is not a reason.I carry a tactical pen, a tactical flash light, a folder, and a fixed blade.
The pen can be utilized as a pen, a kubaton, a loaded fist.
The flash light can be utilized as a light, a kubaton, a loaded fist.
The folder prior to being opened can be utilized as a kubaton or a loaded fist. When opened the same but with a edge.
Same with the fixed blade.
Kubatons themselves are actually illegal here unless you have a weapons licence, too expensive to bother with unless you are doing a lot of weapon training, and even having a licence to carry a kubaton doesn't give you authority to use it. A good solid pen or an appropriate torch give you the equivalent options and most attackers would not think of them as weapons if you lost either in an altercation.