Some people will tell you it is about the wave of immigrants which move to the United Kingdom and stay there, most of them are peaceful and working, though there will be always some bad seeds among them. Others will point out the economy as a whole and how it is forcing both nationals and foreigners to turn into crime for the sake of survival. It is a very biased topic; but solution to it is necessary. No doubt about it.
How about knife crimes in UK? A friend of mine was stabbed from hip in 2021, I hope that it will decrease soon
I am sorry to read that friend of you went through such a horrible thing.
At least, I assume he survived, though. In the European countries, because of the lack of guns and ammo, and because of how difficult it can be for the average citizens to get access to guns, people who are mentally unwell and have feelings on inflicting harm on others then resort to weapon and means which cannot be easily regulated by the goverment of the law enforcement agencies, knives being the quickest and easiest choice for them to pick up. I recall an specific case about a young United States citizen living in the United Kingdom who had a shotgun properly registered to his name, and chose to become a mass murderer, shooting without reason to random people on the street, after murdering his own mother. It is very scary.