Interesting history that I was not aware of in the early years. Especially about the brother that stepped down,after his marriage to Simpson. The film The Kings Speech was very informative about this and the treatment of Bertie by his father. Good film to watch.
So so... not the greatest documentary I've seen on the Windsors. However, it does have some historical merit in that it shows how out of touch they were with the average British citizen during the earliest years.
If you have any interest in the Royals, this is pretty good. Shows how the Queen and Prince Philip met and the problems this family has had to publicly endure. Think about it. Would you like all your dirty laundry out for public consumption?