A scene from “Unfinished Business”

Princess Margaret: Without sun and water, crops fail, Lilibet. Let me ask. How many times has Philip done something? Intervened when you couldn't? Be strong when you couldn't be? Be angry when you couldn't be? Be decisive when you couldn't be? How many times have you said a silent prayer of gratitude for him and thought to yourself, If I didn't have him, I'd never be able to do it? How often? Peter was my sun. My water. And you denied me him.

Queen Elizabeth II: I denied you as Queen, not as your sister.

Princess Margaret: The conditions are irrelevant. The prohibition is what counts. A prohibition, incidentally, you are not now extending to Anne.

Queen Elizabeth II: That is different.

Princess Margaret: How is it different? Anne is a royal princess with no prospect of acceding to the throne, as was I. Commander Laurence is a palace equerry, marrying scandalously above his station. Peter was a palace equerry, hoping to marry scandalously above his. Anne and Commander Laurence are in love. Peter and I were in love. In both cases, one party is a divorcee. The situation is identical in every way except for the outcome. She is being allowed to marry him. I wasn't. Her story ends happily. Mine did not. And yet, even after forty years, you cannot bring yourself to acknowledge what happened to me and the part you played in it.