With Mark Lawson.

Jack Whitehall, Greg Davies, Niamh Cusack and Frances de la Tour are among the performers and artists who share memories and reflections on working with close members of their families.

Christmas is the time when people are most likely to spend time with their closest relatives. But for some in showbusiness the holidays are not a rare family reunion but a continuation of a professional relationship or, for writers and comedians, an encounter with the relatives who have been the source of their best material.

Comedians Greg Davies, Jack Whitehall and Sarah Millican regularly exploit cringeworthy family moments in the service of comedy. They describe how it feels to perform the material with the family members in question in the audience.

Actress Niamh Cusack reflects on the experience of appearing in Chekhov's Three Sisters with two of her sisters and her father, and Andy and Frances de la Tour discuss working together in Alan Bennett's People, and why they are banned from laughing while watching each other perform.

Singer Donny Osmond reveals why he and sister Marie's chemistry on stage does not necessarily reflect the reality off-stage and the conductor Alan Gilbert explains why having his violinist mother in the orchestra prevents the other musicians from indulging in a much-loved pleasure.

Producer Ellie Bury.