Stephen Aaron-Sipple

Stephen Martin Sipple (born December 1987), known professionally as Stephen Aaron-Sipple, is an English actor. He began his career appearing in an array of short films and portraying minor roles in television series including Cuckoo, The Outlaws and The Witcher. He appeared in the Danish crime drama Oxen from 2023 to 2025, before joining the BBC soap opera EastEnders as Mark Fowler in 2026.

Early life Aaron-Sipple was born Stephen Martin Sipple in December 1987 in Waltham Forest, London.

Career Sipple had various jobs and trained as a firefighter prior to acting, before studying at The International School Of Screen Acting. He went on to appear in short films including Light of the World (2012), Ring Ring (2014), Watch Over Me (2014) and Killer Bird (2015). In 2014, he appeared in the music video for the One Direction song "Night Changes". Aaron-Sipple has a daughter, born in 2015. His film credits include Crying Wolf (2015), Creatures (2020), 57A (2020), Wolfshead (2021), Card Dead (2021), Cam Girls (2021) and Revolution X (2023). Between 2023 and 2025, he appeared in the Danish crime drama series Oxen as John Taylor. The drama subsequently began airing on Channel 4 from November 2024.

In January 2026, Aaron-Sipple appeared in EastEnders again in a flashforward episode set on New Year's Day 2027 in which he was simply credited as "Man". Later that month, it was announced he would be joining the cast, taking over the role of as Mark Fowler, last played by Ned Porteous ten years prior. Upon joining the soap, Aaron-Sipple said "Having grown up in East London, EastEnders has been in my life since childhood". He added that he was "excited to be joining not one, but two iconic Albert Square families and was looking forward to viewers seeing why Mark is back, and what Walford has in store for him."

Filmography Year Title Role Notes 2012 Light of the World 2nd King Short film 2014 Ring Ring Martin Short film 2014 Watch Over Me Thug Short film 2015 Killer Bird Warren Short film 2015 Cry Wolf 3D Werewolf Film 2017 Cute Little Buggers Brian Film 2017 The Holly Kane Experiment Snatch Team Film 2017 My Online Nightmare Mark Twitchell 1 episode 2017, 2019 Horizon Cross Recurring role 2017 Apocalypse Dave the Camereman Film 2018 The First Detectives Detective Williams Film 2018 Could You Patent the Sun? Henchman One Short film 2019 Cuckoo Tigran Episode: "Ivy Arrives" 2019 Liam Trevor Short film 2019 The Road to Nowhere Shaun Short film 2019 Card Dead Billy Seage Short film 2020 One-way Glass Tom Short film 2020 57A Jack Short film 2020 EastEnders Delivery Guy Guest role 2021 Cam Girls Steven Short film 2021 Glow & Darkness Gabriel 1 episode 2021 Wolfshead Robin Short film 2021 Creatures Christopher Hall Film 2022 Jungle PC James Episode: "Go. Going. Gone." 2022 Revolution X Vex Film 2023 Trust Mikel Ivanov Episode: "Trust: Renegade" 2023 Sky Monster Karl Film 2023–2025 Oxen John Taylor Recurring role 2024 The Outlaws Rani's Lover 1 episode 2025 Silo Supervising Raider Dan Episode: "Into the Fire" 2025 The Witcher General Gregor Episode: "A Sermon of Survival" 2026–present EastEnders Mark Fowler Regular role

Music videos Year Song Artist 2014 "Night Changes" One Direction