Earlier quoted context omitted.
In the UK, both are now illegal, can't even sell a knife to anybody under 18, same with glue and many things above and beyond alcohol and tobacco. Equally, having a knife in public, would be mandatory jail in the UK in the current climate. For a child, they would be taken into care and some serious nightmares for the parents from social services and the police. As for explosives, all the above, but far worse. By defa…
What kind of knives are we talking about? Are even mini Swiss Army knives with 1.5" blades banned? What about a multi-tool like a Leatherman Wave, which has three 3" blades along with pliers, etc? I carry my leatherman everywhere I go, and wouldn't blink if I saw a 14 year old with one. Ontario, Canada.
However, interpretation of what threatening is varies and for some people say walking a dog, the sight of a knife of any form would be a call to the police - however legal or not. This and the internet has demonstrated time and time again, that whatever is said or done - their will always be some who will take offence.
Take a look at - https://www.knifefree.co.uk/ which is linked upon that page. Can see what type of message they are putting out regarding knives, do recommend doing that quiz. Also interesting is the boss button on the right (quick exit from site onto google).
But then the UK is very London centric in how laws and rules get driven and more so - enforced. Compared to Canada, in which you have more wilderness, the social culture is more at ease and as such the law/system - less reactionary. Equally you have whole area's in which people don't lock their doors. Unheard of in today's times in the UK alas (though I'm sure there are small hamlets of hope). Though was common in the past, even in London.