Film:
* The Electrical Life of Louis Wain (2021) - He played the role of "Doctor" in this biographical drama film about the eccentric English artist Louis Wain.
* The King's Speech (2010) - He had a small but memorable role as "Captain Lawrence" in this historical drama about King George VI and his speech therapist, Lionel Logue.
Television:
* The Crown (2016-present) - He portrays "Lord Mountbatten" in this popular historical drama series.
* The Last Kingdom (2015-2022) - He played the recurring role of "Bishop Ealhstan" in this historical fiction series.
* Doctor Who (2013) - He had a single episode appearance in the long-running science fiction series.
* The Bill (1984-2010) - He appeared in multiple episodes of this British police procedural drama series.
Other Projects:
* The Importance of Being Earnest (2002) - He starred in this stage production as "Algernon Moncrieff" alongside Frances de la Tour.
Socratis Otto continues to be active in the entertainment industry, with new projects on the horizon.