In this vital re-examination of a shared history, historian and broadcaster David Olusoga tells the rich and revealing story of the long relationship between the British Isles and the people of Africa and the Caribbean. Drawing on new genealogical research, original records, and expert testimony, he reaches back to Roman Britain, the medieval imagination, Elizabethan 'blackamoors' and the global slave-trading empire to show that the great industrial boom of the nineteenth century was built on American slavery, and that black Britons fought at Trafalgar and in the trenches of both World Wars. Black British history is woven into the cultural and economic histories of the nation, it is not a singular history, but one that belongs to us all. Unflinching, confronting taboos and revealing hitherto unknown scandals, the book shows the lives of black and white Britons have been entwined for centuries.