Who played Queen Elizabeth II (seasons 1–2) in 'The Crown'?

Who played Dustin Henderson in 'Stranger Things'? In which TV series is Dustin Henderson a main character? Who played Mike Wheeler in 'Stranger Things'? Who played Dolores Abernathy in 'Westworld'? In which TV series is Queen Elizabeth II (seasons 1–2) a main character? Who played Jack Pearson in 'This Is Us'? In which TV series is Jack Pearson a main character? Who played Randall Pearson in 'This Is Us'?