David Oyelowo

as Seretse Khama

Rosamund Pike

as Ruth Williams-Khama

Tom Felton

as Rufus Lancaster

Jack Davenport

as Sir Alistair Canning

Terry Pheto

as Naledi Khama

Laura Carmichael

as Muriel Williams

Jessica Oyelowo

as Lady Lilly Canning

Vusi Kunene

as Tshekedi Khama