It will be different every time it happens and only the person involved can decide what they think is the best option, not to say they are going to get it right of course. all of the experiences I've had didn't involve running away as it wouldn't have helped, sometimes the standoff resulted in the one side backing off and other I had to fight, sometimes winning sometimes not.

Carrying a knife isn't a good idea, I have never carried one and I was brought up in quite a rough area and saw my first knife fight when I was about 6, both of the men fighting got cut.

Making the carrying of knives illegal isn't the answer in my opinion, this government likes to ban things instead of solving the problem, I also don't think the problem is as big as the media make out. How many deaths have there been in London this year from stabbings? 21? Out of how many people? 7 million? Those odds are pretty good.