Big Issue sellers are salespeople not beggars - this is endorsed by the magazine. They are not meant to be 'Obstructing the general public' for example by 'sitting on the pavement'. They behave like beggars, so no surprise people object.

There is every reason to believe these people are part of the same family as they are often seen together, including the child that gets dragged along with the 'father' while he hassles people to buy the paper. Who knows what their situation might be? who can say if they are related or not? what does it really matter - it's beyond me why this is a 'dangerous' thread.