I flew LAX-LHR last night on BA. There was a German speaking family (parents plus 4-5 year old son) behind me. The parents put the son in the window seat (behind me). After 10 minutes or so of having the child continuously kick my seat, I turned around and politely asked if they could ask their son to stop kicking my seat. Their response, "Well, there's nothing we can really do...couldn't you move to the middle seat?" Um, no...fortunately, the child did listen for the most part and dad later switched to the window, but was kicking the middle seat (no occupant) for the last 90 minutes of the flight this morning.. It would have been a long 9.5 hours with that going on!! Is there a better way to handle this? I asked nicely, but was definitely annoyed.