The interviewer touched on her book Me: Stories of My Life where Katherine mentions that she should have married Spencer.

Katherine replied: “Well, who will ever know? I mean, I never would have had an opportunity to because he was not in a position to offer that and it just worked very nicely for us as it was.

“When I met Spencer I discovered myself. Do you know what I mean? That apparently meant a great deal to me, I think it must have.

“But he had me, I didn’t have him necessarily! Do you know what I mean? Cause one person has to make that relationship work. I think I know how, and I think I did make it work.”

Talking Pictures is available on BBC iPlayer.