Game of Thrones star Kit Harington joins Jonathan in the studio, and while he will no doubt be talked into chatting about the shocking developments for his character Jon Snow at the end of the show's penultimate series, discussion is likely to fall on the fact that he is starring as Robert Catesby - his own ancestor - opposite fellow guest Liv Tyler in the BBC's historical drama Gunpowder later this autumn. Also taking a seat on the sofa this evening are former Great British Bake Off presenter Sue Perkins, Grammy Award-winning singer Mary J. Blige, and comedian Rob Beckett. Plus, music by chart-topping singer Dua Lipa.