Helen Mirren
Helen Mirren remarked that her transformation into her role as Queen Elizabeth II came "naturally" after she put on a wig and glasses. She also researched and trained extensively to inhabit the role. She won an Academy Award for her performance. Mirren is a highly regarded British actress, known for her roles in countless films. Her films include The Debt, Pascali's Island, The Tempest, Caligula, The Last Station, The Door, The Comfort of Strangers, The Madness of King George, Red, The Cook, The Thief, His Wife & Her Lover, Gosford Park, Calendar Girls, The Long Good Friday, and Cal.
Michael Sheen
Michael Sheen first starred as Tony Blair in 2003 in a film called The Deal. That film was written by Peter Morgan, who also wrote The Queen. Sheen later starred as Blair in 2010's The Special Relationship. For his role as Blair, Sheen was nominated for a number of prominent awards, including a BAFTA. His other films include Underworld, Frost/Nixon, Tron: Legacy, Alice in Wonderland, Midnight in Paris, Far from the Madding Crowd, and Wilde.
James Cromwell
James Cromwell is an American character actor who has been in many films in his long career. His films include Babe, L.A. Confidential, Space Cowboys, W., The Artist, and Jurassic World: Fallen Kingdom.
Alex Jennings
Alex Jennings is a British actor who has appeared in many plays and films. His films include Babel, The Wings of the Dove, Bridget Jones: The Edge of Reason, The Four Feathers, and The Lady in the Van.