The British Empire is a subject of both shame and glorification. Journalist Sathnam Sanghera talks to historian David Olusoga about how our imperial past is everywhere: from how we live and think to the foundation of the NHS and even our response to the Covid-19 crisis. Sanghera is author of Empireland and most recently Empireworld, a look at how British imperialism has shaped the world. Olusoga’s latest book is Black History for Every Day of the Year.