He took over from Matt Smith in the role in season three and has just appeared in the fourth outing.
The part earned him a Golden Globe Award nomination and has been highly praised by critics.
The latest series takes place from 1977 until 1990 and follows the tumultuous years of the monarchy.
This includes events like the marriage of Prince Charles to Diana, Princess of Wales as well as Margaret Thatcher’s time as prime minister.
Outlander seasons 1-5 are on Amazon Prime Video. The Crown seasons 1-4 are on Netflix.