It's a crying shame that we are strangled by current legislation. I know for a fact that interest in what goes on in front of the portcullis is undiminished and it is criminal that we are not as captains allowed to use our own judgement as to who we allow on the flight deck in flight. My sister, who I have known for more than fifty years, is not allowed to accompany me on MY flight deck but any herbert who I have never met who happens to have a 'pass' can do so. Absolute nonsense. I do not break the rules but that does not stop me being angry about the situation.