Judging by the comments here its blatantly obvious that the police were clutching at straws here.

There’s absolutely no reason to bring up the knife at all. It’s such a moot point to make. In this age where police don’t even show up if you call them, you’re making a point about a knife being under the bed?

Cannabis cultivation kit? …seriously. Not even Cannabis plants…a kit.

BBC should have just left the story as being about the fake notes.