True - there is no such thing as a Knife Permit there, or Knife Registration (not yet, at least).
But there is a bit more to their knife law in England. Essentially, if you have a Buck Knife in public, maybe in your car (or backpack), you better be ready to show a really good reason for possessing it. Saying you went camping last week won’t cut it. Proving you are going to an event where that particular knife is needed - maybe ON THE WAY to the campground - is probably ok - but you’ll still have to make your case to the judge to keep out of jail, so you better be ready to prove your point. As the article notes, you are “presumed guilty” for public possession once you’re caught, and you now have to convince a judge that you had a valid purpose for it (and self-defense, obviously, is not valid).
http://en.wikipedia.org/wiki/Knife_legislation#United_Kingdom
[[you better be ready to show a really good reason for possessing it.]]
Would “I carry it incase my govenrment coems along and tries to violate my inalienable rights’ suffice?