Its one of the things that living in the UK is shit for, not being able to carry a gun. WHEN bitcoin moons Im moving to the US & will amass a huge Arsenal of weapons for shits & gigs.
To wit, this is one of the reasons I legally conceal carry whenever I leave the house. There are enough people IRL that know what I'm (approximately) worth, and I consider concealed (or open) carrying as insurance against a possible $5 wrench-attack.
In my countys news, like an hour ago, they told us that even common objects like a pen are good to defend against an attacker with a knife, can you belive that? Good luck, lol. Can't make that shit up.
Or were they talking about a pen shot from a gun?

Tactical pen; made from titanium and fitted with a thumb grip... Reasonably priced too!