Acting

Mark O'Sullivan

Place of birth

Bedford, Bedfordshire, England

Known for

Acting

Credits

13 titles

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.

Known for

8 Out of 10 Cats Does Countdown poster
7.4

Jimmy Carr hosts proceedings as the 8 Out of 10 Cats crew take over the words and numbers quiz.

8 Out of 10 Cats Does Countdown

2013

No artwork available
NR

Comedy Blaps is Channel 4's vehicle for piloting comedy online. Some pilots consist of a single short, whereas others consist of a few shorts.

Comedy Blaps

2011

The Nevers poster
7.9

In the last years of Victoria's reign, London is beset by the "Touched": people — mostly women — who suddenly manifest abnormal abilities, some charming, some very disturbing. Among them are Amalia True, a mysterious, quick-fisted widow, and Penance Adair, a brilliant young inventor. They are the champions of this new underclass, making a home for the Touched, while fighting the forces of… well, pretty much all the forces — to make room for those whom history as we know it has no place.

The Nevers

2021

Lee and Dean poster
6.0

Stevenage-based builders Lee and Dean are brothers from other mothers, inseparable best friends since they first met at school. That is until Lee meets and falls in love with Nikki and she moves into their flat.

Lee and Dean

2018

My Sexual Abuse: The Sitcom poster
NR

Comedian Mark O'Sullivan researches and writes a sitcom about the sexual abuse he survived as a child, and the court case that led to the conviction of the man who abused him.

My Sexual Abuse: The Sitcom

2024

My Sexual Abuse: The Sitcom (The Actual Sitcom) poster
8.0

The actual sitcom, based on the experiences of creator Mark O'Sullivan, a survivor of childhood sexual abuse, who joins an all-star cast including Cariad Lloyd and Ellie Taylor before a live audience.

My Sexual Abuse: The Sitcom (The Actual Sitcom)

2024

Film credits

Series credits

Behind the camera