A scene from “Unfinished Business”

Prince Charles: Prince Harming, they're calling me now. Amid endless other calumnies and lies. I know you've always tried to see both sides of the marriage, but will you now, finally, agree that official separation is the only sensible course?

Queen Elizabeth II: Charles...

Prince Charles: If it were just incompatibility or infidelity, that would be one thing, but the sheer vindictiveness of that Morton book. And then the temerity to insist that she had nothing to do with it. I've done as you asked, Mummy. I've tried to make it work for 11 years, but there comes a point...

Queen Elizabeth II: I have been no stranger this year to my children's marital difficulties. But while Anne's and Andrew's problems are deeply distressing, yours are in a category of their own because you, as future king, are in a category of your own. At my coronation, I took an oath that you will one day take at yours to maintain the laws of God. And God's law is that marriage is for life. And while it is expected for the monarch to be married and produce an heir, being happily married is a preference rather than a requirement.

Prince Charles: You also took a solemn promise to maintain and protect the Crown. Diana won't rest until she's blown the whole thing up. Is that what you want? It's funny, isn't it? I... For years, I've called for a more modern monarchy that reflects the world outside. Look at the rates of family breakdown out there, and then look at us. Margaret, divorced. Anne, divorced.

Queen Elizabeth II: All right.

Prince Charles: Andrew, humiliated and heading for divorce. Me, trapped and dreaming of divorce. And you talk about moral examples. If we were an ordinary family and social services came to visit, they'd have thrown us into care and you into jail!