Chaos, death and devastation are much easier to happen when you let people in with guns,swords,bandoleers of grenades etc as witnessed above. Even more so when you can buy more swords and knifes on site. The thrust of the post is that security is not limiting destructive potentiall by these methods. As such this type of security would not have any effect on stopping a nutter with one of the above weapons not to mention a few fully functioning crossbows and longbows also seen at the events
If you dont need to hide a sword, gun or crossbow etc it doesnt leave much to hide. Not yet been to a gig, nightclub, or sports stadium that allows guns or swords though, despite living in Newcastle. Only allowed to wander freely around comicon with them so far.
Knowing the catering arrangements in Newcastle security could of course be attempting to stem the availabilty of heathy/tasty/inexpensive food options. Without these smuggled items a small mortgage may be needed in order to secure a hot dog on site:-)