Sex Education has become one of the most popular and talked-about shows in recent years, drawing attention for its progressive storytelling, bold themes, and stellar performances. With the release of Sex Education Season 4, fans are excited to see what’s next for the beloved characters. In this article, we will break down the Sex Education Season 4 cast and explore the actors who bring these characters to life.
Whether you are a long-time fan of the series or just getting into it, understanding who plays whom can deepen your appreciation for the show’s dynamic performances. So, let’s dive in.
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Asa Butterfield – Otis Milburn
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Emma Mackey – Maeve Wiley
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Gillian Anderson – Jean Milburn
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Ncuti Gatwa – Eric Effiong
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Aimee Lou Wood – Aimee Gibbs
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Connor Swindells – Adam Groff
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Mimi Keene – Ruby Matthews
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Alistair Petrie – Michael Groff
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Samantha Spiro – Maureen Groff
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Kedar Williams-Stirling – Jackson Marchetti
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Dua Saleh – Cal Bowman
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Chinenye Ezeudu – Viv Odusanya
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George Robinson – Isaac Goodwin
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Dan Levy – Thomas Molloy
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Thaddea Graham – Sarah “O” Owen
Asa Butterfield – Otis Milburn
Asa Butterfield returns as Otis Milburn, the awkward, yet compassionate protagonist. In Sex Education Season 4, Otis continues to navigate the complexities of adolescence while dealing with the pressures of his relationship with Maeve and his journey toward self-discovery. Butterfield has done a remarkable job portraying Otis as he grows more confident and mature. His chemistry with the other cast members makes him a fan-favorite character, and viewers are eager to see how his character evolves in this season.
Emma Mackey – Maeve Wiley
Emma Mackey plays the rebellious and smart Maeve Wiley. Known for her sharp wit and independent spirit, Maeve faces significant challenges in Sex Education Season 4, especially when it comes to her love life and her academic ambitions. Mackey has been praised for her ability to embody Maeve’s complexity — balancing vulnerability and strength effortlessly. Maeve’s evolution is one of the most anticipated storylines in the series, making Mackey’s performance crucial to the season’s success.
Gillian Anderson – Jean Milburn
Gillian Anderson, playing Jean Milburn, Otis’s mother, is a standout character in Sex Education. As a sex therapist, Jean offers not only professional insight into the characters’ lives but also a rich emotional storyline of her own. Anderson’s portrayal of Jean continues to impress as she deals with her relationships, career, and motherhood. In Sex Education Season 4, Jean faces new challenges that will test her boundaries and her personal growth. Anderson’s nuanced performance has made Jean a central figure in the series.
Ncuti Gatwa – Eric Effiong
Ncuti Gatwa returns as Eric Effiong, one of the most beloved characters in Sex Education. Known for his colorful personality and flair for fashion, Eric’s character has grown tremendously throughout the series. In Season 4, Eric continues to explore his identity, especially in relation to his love life and evolving friendships. Gatwa’s portrayal of Eric brings a unique energy to the show, and fans can expect more heartfelt and comedic moments from him in this season.
Aimee Lou Wood – Aimee Gibbs
Aimee Lou Wood plays Aimee Gibbs, Otis’s friend who has been one of the most relatable and inspiring characters throughout the series. Aimee’s storyline in Sex Education addresses her personal growth, dealing with trauma, and finding strength in her individuality. Wood’s performance is both tender and empowering, making Aimee one of the standout characters in Season 4. Viewers will see Aimee’s journey continue to unfold in this season, providing important messages of resilience and self-acceptance.
Connor Swindells – Adam Groff
Connor Swindells plays Adam Groff, the rebellious son of the school’s headmaster. In Sex Education Season 4, Adam’s character continues to face challenges in his relationships and his sense of self-worth. Swindells’s portrayal of Adam has evolved from a misunderstood bully to a more complex and layered character, and his development is one of the most interesting arcs in the series. Adam’s journey in Season 4 promises to bring emotional depth to the show.
Mimi Keene – Ruby Matthews
Mimi Keene plays Ruby Matthews, one of the more glamorous and initially unapproachable characters. However, as Sex Education has progressed, Ruby has revealed her more vulnerable and empathetic side. Keene’s performance adds layers to Ruby’s character, making her both a source of drama and an important character in the group dynamic. In Season 4, Ruby continues to develop, and fans are eager to see her evolve even more as she interacts with the other students and faces her own personal challenges.
Alistair Petrie – Michael Groff
Alistair Petrie returns as Michael Groff, the strict headmaster of Moordale Secondary School. Michael’s character has been a source of tension throughout the series, especially in his complicated relationship with his son, Adam. Petrie’s portrayal of Michael brings a certain depth to the role, making him both intimidating and pitiable at times. In Sex Education Season 4, Michael faces new challenges, particularly with the shifting dynamics at the school.
Samantha Spiro – Maureen Groff
Samantha Spiro plays Maureen Groff, Michael Groff’s wife and Adam’s mother. Maureen has always been an empathetic character, trying to support her son despite her difficult marriage. In Sex Education Season 4, Spiro continues to bring emotional depth to the role, making Maureen’s story arc one to watch. Her interactions with Adam and Michael will continue to be a source of both tension and growth in this season.

Kedar Williams-Stirling – Jackson Marchetti
Kedar Williams-Stirling plays Jackson Marchetti, the talented swimmer and former boyfriend of Maeve. Jackson’s character arc in Sex Education has focused on his struggles with body image, perfectionism, and relationships. In Season 4, Williams-Stirling continues to explore Jackson’s vulnerabilities, and his journey is one of self-acceptance. Fans are keen to see how Jackson’s storyline progresses as he faces new personal and athletic challenges.
Dua Saleh – Cal Bowman
Dua Saleh joins the Sex Education cast as Cal Bowman, a non-binary character who brings an important perspective to the series. Cal’s storyline explores issues of gender identity, self-expression, and navigating the complexities of high school. Saleh’s portrayal of Cal has been praised for its authenticity and sensitivity, making Cal an important addition to the show. Sex Education Season 4 delves deeper into Cal’s character, and their journey offers powerful messages about acceptance and self-discovery.
Chinenye Ezeudu – Viv Odusanya
Chinenye Ezeudu plays Viv Odusanya, a student who is driven, ambitious, and unafraid to speak her mind. Viv’s character has grown throughout the series as she juggles academic pressures, personal relationships, and her evolving identity. In Sex Education Season 4, Ezeudu continues to showcase Viv’s complexity, making her one of the standout characters in this season. Her story arc is one of resilience and ambition, and fans can look forward to seeing Viv face new challenges in this season.
George Robinson – Isaac Goodwin
George Robinson plays Isaac Goodwin, a character who plays a significant role in the romantic tension between Maeve and Otis. Isaac’s presence in Sex Education Season 4 adds an interesting dynamic to the group, and his complex relationship with Maeve continues to develop. Robinson’s portrayal of Isaac has been praised for its subtleness and emotional depth, and fans will be eager to see how his relationship with Maeve evolves in this season.
Dan Levy – Thomas Molloy
Dan Levy joins the Sex Education cast as Thomas Molloy, a well-known author and Maeve’s mentor. Levy’s comedic timing and charm bring a new energy to the series, and Thomas’s relationship with Maeve will play a pivotal role in the season. Levy’s performance is expected to add humor and heart to Sex Education Season 4, and his character will offer valuable guidance to Maeve as she continues to navigate her career aspirations.
Thaddea Graham – Sarah “O” Owen
Thaddea Graham plays Sarah “O” Owen, a new character introduced in Sex Education Season 4. O is a new addition to the group of students at Moordale Secondary, and her presence shakes up the dynamics between the existing characters. Graham’s portrayal of O is a fresh and exciting development in the series, and fans are excited to see how her character fits into the larger narrative of the show.
Conclusion
The Sex Education Season 4 cast brings a fresh and exciting lineup of actors, each of whom plays a pivotal role in the series’ success. From Asa Butterfield’s portrayal of Otis to Thaddea Graham’s introduction as Sarah “O” Owen, each actor brings something unique to the table. Whether it’s drama, humor, or heartfelt moments, these talented actors make Sex Education a show worth watching season after season. Fans can look forward to seeing how these characters evolve in Season 4, and we can’t wait to watch the story unfold.
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