I have to say, it's very biased against poor Mary, Queen of Scots. Mary also has a Scottish accent in the film, which makes no sense. She would have spoken French.
It made Mary out to be a pretty awful plotter on Elizabeth's life, and that isn't historically unambiguous. It's not clear exactly what went down. Poor Mary gets a bad historical rap.
Oh well, the movie was okay. I just have to remember that it's like the Fox News of 16th century politics. All bias, no nuance, but it sure is sensational!