The castaway in this week's Desert Island Discs is a philosopher, academic and mistress of Girton College, Cambridge; but Lady Mary Warnock is perhaps best known for her work in the public arena, on committees looking at a wide range of ethically-controversial subjects, including embryo research and animal experimentation.

[Taken from the original programme material for this archive edition of Desert Island Discs]

She'll be talking to Sue Lawley about these difficult areas and also her early days as an academic when she was also bringing up five children. Throughout her life, music has also been a dominant theme and she'll be carrying out the difficult task of choosing eight records to accompany her to the desert island.

Favourite track: My Beloved Spake by Henry Purcell