“In fact, 7 out of 10 young people who end up in A&E with a knife injury have been stabbed with their own knife. Carrying a blade actually puts you at risk.”
The statistic seems to be from here. The suspicious part is that it doesn’t seem to break down A&E (that’s British for Emergency Room) between accidents and fights. Of course, most people how have accidents while cooking are going to have them with their own knives, especially if they are teenagers and are likely to cook at home, but not to work in a restaurant.