A scene from “Unfinished Business”

Queen Elizabeth II: I hear you had a visit from Princess Diana.

Tony Blair: Yes, she came to Chequers last week with Prince William. We had a nice game of five-a-side. That's football. Then we had lunch. Then the princess and I went for a walk around the grounds. She feels strongly that she still has a lot to offer the country as a public servant. And a lot of energy. If you take her recent work on landmines, two years ago, a global ban on landmines was considered impossible. Now, almost a hundred countries have agreed to sign a treaty outlawing them. When Diana talks, the world listens.

Queen Elizabeth II: Yes.

Tony Blair: She wanted to know if I, that is, the government, could find a way to harness her gifts on a more formal basis. And that any official role I, we, might offer her would be enormously appreciated.

Queen Elizabeth II: I always say it's hard to be half in anything. You're either in or out. You yourself will know the difference of being in government or out. While she's mother of the boys and, in that respect, always welcome at the palace, as a divorced woman and no longer an HRH, Diana is now learning the difference between being officially in the royal family, and out.