Newsflash, you have no right to privacy in a public place.
And what about kids? Do you mean you let yours out of the house? How irresponsible are you, any sick deviant could be looking at themIf you're letting them out of the house without a full length sack over the head (for the sprint from the safety of the car to the house) you deserve everything you get.
So he can use those photos of other people for whatever reason at all? I dont think so.
Ive got the right to walk down the street without some photographer jumping in front of me taking my photo then using it for whatever illicit means (ie commercial or for their own "artistic" use)
The photographer does not have the right to do that. Maybe they do in UK law i dunno - but that doesnt mean its right.
I can understand the police being suspicious of someone who is photographing strangers and then refuses to give his own identification and then has the cheek to try to put the blame on the police when he is the one who is acting in an underhand manner.