1. The Making of Britain - 1603-1707

David Olusoga tells the story of attempts to form a united Britain in the 17th and early 18th centuries, a period defined by religious and cultural divisions.

3. The Two Nations

The 19th-century union appears secure, but beneath the surface run deep divisions, leading to the emergence of a new working-class movement - and a catastrophic famine in Ireland.

4. Union and Disunion

The 20th century sees partition in Ireland. A sense of national unity emerges in the aftermath of the Second World War, but economic challenges in the 1970s create new divisions and questions about the union’s future.