Originally Posted by Anne_Cameron:
“The actress who plays Shula was reknowned for voicing the parts of children. As well as playing Shula, she played the young Elizabeth Archer, also Kenton as a child and even Adam Macy (until his voice broke!)
So it could be more than likely that an adult is playing Henry.”
It never was very convincing when adults played children - I grew up with it - and almost never done any more. An older actor might occasionally be used for a very melodramatic part but it's far more common to record a child of roughly the right age off set. You can hear the difference in the sound quality when Henry is talking from the rest of the scene. Many of his lines are also pretty much ordinary day to day conversation, anyway - 'OK', 'I'm not hungry'.
He's also not pictured and on the website, and isn't named as anyone other than 'Henry Archer'.
All of which is a long winded way of saying that Henry
is played by a child!