If thats the case they should use a hand held metal detector like nightclub bouncers use or a female OB, not some member of the public in a hi viz that has no more rights than me or you to root through someones personal possessions. They don't go through everyones bags so what's the point unless they deem parents/ grandparents with a young kid to be a potential terrorist.
How do we know that the member of public in an orange hi viz isn't a loon that's carrying? Who's searched them cause they're a potential criminal going by Millwalls logic? I'd rather they were searched and not some kid with there guardian. They're slowly but surely driving bods away, little by little, measure by measure.