Helen Mirren Catherine the Great Actor, Executive Producer Andrew Rothney Alexander Dmitriev-Mamonov Actor Antonia Clarke Princess Sophie Actor Clive Russell The Fool Actor Gina McKee Countess Bruce Actor James Northcote Alexander Bezborodko Actor Jason Clarke Grigory Potemkin Actor Joseph Quinn Paul Actor Kevin R. McNally Alexei Orlov Actor Lucas Englander Lieutenant Mirovich Actor Paul Kaye Pugachev Actor Paul Ritter General Suvorov Actor Raphael Acloque Platon Zubov Actor Richard Roxburgh Grigory Orlov Actor Rory Kinnear Minister Panin Actor Sam Palladio Alexander Vasilichikov Actor Thomas Doherty Peter Zavadovsky Actor Philip Martin Director Charles Pattinson Executive Producer Christine Healy Executive Producer David M. Thompson Executive Producer Nigel Williams Writer