Actor

Mark O'Sullivan

Bedford, Bedfordshire, England

Mark O'Sullivan is a producer, actor, and writer known for Tell Me Everything (2022), Lee and Dean (2017) and My Sexual Abuse: The Sitcom (The Actual Sitcom) (2024). Mark won an RTS award in 2025 for his documentary (and sitcom episode) My Sexual Abuse: The Sitcom, made by Swan Films for Channel 4, was awarded the best Arts programme for 2025.

Notable work

7.9
The Nevers (2021)
as Orderly

Full filmography · 4

Swan
as Ted
2020
Reaper
as Doctor
2000