Today's guest editor Baroness Boothroyd made history as the first, and to date, only female speaker in the House of Commons. She believes that people should rise according to their merits and not as a result of positive discrimination. However, she abhors the idea that talented women are held back by a glass ceiling that, though cracked, is still well and truly in place.

Evan Davis met with Lucy Neville Rolfe, executive director of Tesco, Lorraine Heggessey, the first female controller of BBC1, and Rachel Lomax, former deputy governor of the Bank of England.

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