Sir Idris Elba, Martin Freeman, Erin Doherty, Wunmi Mosaku, Olivia Dean

Among the guests on Graham's sofa tonight: The Hobbit and Sherlock star Martin Freeman, talking about Netflix series Agatha Christie's Seven Dials; The Crown and Adolescence star Erin Doherty, discussing the new series of Victorian drama A Thousand Blows; and triple-BRIT-nominated singer-songwriter Olivia Dean, performing So Easy (to Fall in Love) from her current album The Art of Loving.