Comedian Billy Connolly has announced new film and touring plans despite facing ill health. Mark Coles explores how Connolly has long used humour to defy serious adversity. Childhood abuse and alcoholism have been countered by a rich musical, comedy and acting career.

In this profile of the Glasgow welder who became a global star, Connolly's own performances and voice are mixed with the thoughts of those who know him well - including singer Barbara Dickson and producer John Lloyd.

Producers: Heba Ayoub, Chris Bowlby.