Recurring Guest Characters Emilia Clarke 1 guest appearances Lemn Sissay 1 guest appearances David Olusoga 1 guest appearances Helen Mirren 1 guest appearances Brian Bilston 1 guest appearances Kwame Kwei-Armah 1 guest appearances Emma Thompson 1 guest appearances Greg Wise 1 guest appearances Lee Daniels 1 guest appearances Don McCullin 1 guest appearances