The broadcaster Victoria Derbyshire has kept a diary since she was a child. She talks to Alastair Campbell about the habit of diary writing, and why he keeps a diary. She finds out why he started writing them, and whether, now he is so well known for them, the decision to publish affected the people close to him.

Alastair Campbell talks frankly about the two occasions when his diary was read by others in circumstances beyond his control - one when he had a nervous breakdown and a police psychiatrist used his diary entries to help him see the part drink played in his problems; and the other when Lord Hutton asked to see his diaries as part of the inquiry into the death of David Kelly.

Producer: Isobel Eaton.