Anthony Barnett, a campaigner and author, discusses the evolution of English identity within the UK and the potential for the country's breakup. He references the work of Tom Nairn, highlighting the dangers of a narrow, primarily English perspective that could lead to problems. Barnett points out that the rise of nationalism is not a new phenomenon and goes back a long time. The author has been involved in constitutional reform and has a deep understanding of the issues surrounding the UK's national question.