We do also have evidence of how their mother allows them to behave also, due to her TV show.
On peters and Katie's show we have also witness him telling the children off, eg: princes throwing a strop, Junior disappearing to play with IPad and he showed good parental skills. Katie showing good parental skills with Harvey, when he refuses to do something or when he throws a strop.
Peter and Katie seem to be good parents. Judge the adults behaviour not the children. The children are typical of most children behaviour.
I think most posters are trying to - I certainly am.
I honestly don't believe that the main issue is the children's behaviour at all - by all accounts they are nice, well-behaved kids.
As far as I can see, the problem is that we are aware of, and are consequently judging the way they behave, as a direct result of their exposure on tv.
judging the adult - their father - and my verdict is that he's guilty.