There are boundaries in place to protect the children from being relentlessly papped in the UK and most of the time the papers stick to it 100%. The recent photos of the kids with Kate that were online and in overseas media weren't published by any UK media.
The Sun still has the pictures up on their website so it's possible that KP agreed to them being released as they didn't really show any of the kids faces clearly. They have done that on occasion IIRC.
If the Cambridges are unhappy then they probably will report them to IPSO.
I do feel sorry for them that there's always the possibility of a private family outing ending up online but it actually ending up in the papers is rare these days so there's a chance the Sun had permission to do so.
The Sun still has the pictures up on their website so it's possible that KP agreed to them being released as they didn't really show any of the kids faces clearly. They have done that on occasion IIRC.
If the Cambridges are unhappy then they probably will report them to IPSO.
I do feel sorry for them that there's always the possibility of a private family outing ending up online but it actually ending up in the papers is rare these days so there's a chance the Sun had permission to do so.