Can you (legally) EDC knives and multitools in England? I was under the impression that "just in case" is not a valid reason for having a blade in public, although it is no problem if you are transporting it to a place where you need it. (And self-defense is not a legal purpose?) Is this accurate and does it include multitools?

I believe this has been covered in the last few months, but I can't find it in the search.