Jobasha wrote:How big are the knifes. It is legal to carry around a blade of three inches or less, so long as the blade can fold away like a lock knife or a pen knife. No fixed blades
a "lock knife" does not come into the category of "folding pocket knife" because it is not immediately foldable at all times; (R v Deegan [1998] 2 Cr.App,R 121 CA).
For a knife to be a folding pocket-knife within the meaning of this section, it must be readily and immediately foldable at all times, simply by the folding process. A lock-knife, which required a further process, namely activating a trigger mechanism to fold the blade back into the handle, was held not to be a folding pocket-knife (Harris v DPP [1993] 1 All ER 562); followed in R v Deegan [1998] Crim LR 562,[1998] 2 Cr App Rep 121. The section applies to articles which have a blade or are sharply pointed, falling into the same broad category as a knife or sharply pointed instrument;
It is only legal to carry around a folding pocket knife of less than 3 inches but you could still be prosecuted for it if carried to defend yourself. All pointed or bladed articles of any size except a folding pocket knife are illegal to be carried in public unless you have lawful authority or a reasonable excuse.
Ultimately, if you have a knife you want to use in performance it is best to have it in the boot and in a bag and in a container and have written permission from the person hiring you for the performance. You could still be arrested but you would get off in court !