Costa Book of the Year: Sebastian Barry on second win

Sebastian Barry, who has won the Costa Book of the Year for a second time, tells the BBC that he dedicated the prize to his son, but reveals his children don't read his books.

Days Without End, a historical novel set in 1850s, tells the story of two Irish soldiers who go to fight in the US.

The gay relationship at the heart of the novel had been inspired by Barry's son coming out.