I am not a Royalist by any stretch of the imagination but I was intrigued to see this after all the good reviews about Helen Mirren.
Helen Mirren was good, it has to be said. Although she made the Queen more human than I imagined her to be.
The story was more about Princess Diana's death and the Royal reaction to it than about the Queen per sae. Not entirely sure why that title was chosen really.
Over all I would give it 4/5 as it gives a good explanation on why the Royals reacted in the way they did and, I think, a realistic view of what went on behind the scenes.