Jack McMullen is an English actor and writer who became widely recognised for playing Finn Sharkey in the popular BBC drama Waterloo Road. Although McMullen had already built experience as a child actor through shows such as Brookside and Grange Hill, his role as Finn introduced him to another generation of television viewers. He appeared in Waterloo Road and became an important part of the show’s fifth, sixth and seventh series.
jack mcmullen waterloo road Finn Sharkey was one of the more complicated teenage characters in Waterloo Road. He arrived at the school with a reputation for causing trouble, but his story gradually revealed a more vulnerable side. His friendships, romances, family difficulties and emotional struggles gave Jack McMullen plenty of challenging material to perform. After leaving the BBC drama, McMullen continued developing his career with roles in television, film and drama productions.
Who Is Jack McMullen?
Jack McMullen was born in Liverpool, England, in 1991 and began acting professionally while he was still young. His early career included a role in the long-running Channel 4 soap Brookside, where he played Josh McLoughlin. He later appeared as Timothy “Tigger” Johnson in Grange Hill, another well-known British television programme focused on young people and school life.
These early roles gave McMullen valuable experience in television before he joined Waterloo Road. His career is notable because he did not enter the industry through one sudden breakthrough. Instead, he gradually developed as a performer through several British television productions before taking on more demanding dramatic roles as an adult.
Jack McMullen as Finn Sharkey in Waterloo Road
jack mcmullen waterloo road joined Waterloo Road during Series 5 as Finn Sharkey. Finn was introduced as a troubled student with a difficult reputation at his previous school. His arrival immediately created tension, and he quickly became friends with Josh Stevenson, played by William Rush. Their friendship became one of the important relationships surrounding Finn during his time at the school.
Finn was initially presented as a rebellious and troublesome teenager, but the character was more complicated than that description suggests. Behind his behaviour were family problems, loneliness and a strong desire to feel accepted. McMullen’s performance helped show both sides of Finn, allowing viewers to understand why he often made poor decisions while still seeing his capacity to care about other people.
Finn Sharkey’s Story in Waterloo Road
Finn’s story includes several major Waterloo Road plotlines. He becomes involved in relationships with several students, but one of his most significant relationships is with Sambuca Kelly. Their relationship gives Finn an opportunity to show a softer and more caring side of his personality. Sambuca becomes an important influence on him, and her illness later has a profound effect on his life.
Finn also becomes involved in serious situations involving his friends and other students. One major storyline sees him trying to help Denzil Kelly after a dangerous stunt goes wrong. Finn’s attempt to save Denzil results in a serious injury, creating another turning point in his character development. These events show that, despite his earlier reputation, Finn is capable of putting himself at risk to protect someone else.
Finn Sharkey and Sambuca Kelly
Finn’s relationship with Sambuca Kelly is one of the most emotional parts of his Waterloo Road storyline. Sambuca, played by Holly Kenny, becomes a stabilising presence in Finn’s life. Their relationship develops at a time when Finn is trying to move away from some of the destructive behaviour associated with his earlier years at the school.
Sambuca’s diagnosis with brain cancer changes everything. Finn struggles to deal with the seriousness of her illness and finds it difficult to imagine life without her. Her death becomes one of the defining experiences of his character, and the storyline helps explain why Finn later struggles to move forward emotionally. It also demonstrates how Waterloo Road combined teenage relationships with serious social and emotional subjects.
Finn Sharkey and Trudi Siddiqui
After losing Sambuca, Finn eventually develops a relationship with Trudi Siddiqui. Their relationship becomes increasingly important during Series 7, as Finn attempts to rebuild his life and find a sense of direction. Trudi provides a new chapter for him, although their relationship is far from straightforward.
Finn also becomes involved in conflict surrounding Trudi’s family and other students. At one point, jack mcmullen waterloo road becomes connected with a rival gang and makes decisions that put both himself and other people in danger. His involvement leads to serious consequences, but Finn ultimately takes responsibility and helps protect Trudi’s family. This storyline reinforces one of the central ideas behind his character: although Finn repeatedly makes mistakes, he is capable of recognising when he has gone too far.
When Did Jack McMullen Leave Waterloo Road?
Jack McMullen left Waterloo Road at the end of Series 7. Finn’s departure comes after a dramatic series of events involving his friends, rivals and relationship with Trudi. jack mcmullen waterloo road final storyline gives the character a clear direction rather than leaving his future completely uncertain.
Finn eventually decides to leave the school and travel to Canada with Trudi, with the pair planning to attend university. His departure therefore represents a transition from school life into adulthood. After several seasons of difficult experiences, Finn finally has an opportunity to move forward and build a different life away from the problems that had surrounded him at Waterloo Road.
What Did Jack McMullen Do After Waterloo Road?
After leaving Waterloo Road, jack mcmullen waterloo road continued to work regularly in television and film. jack mcmullen waterloo road later credits include appearances in productions such as Little Boy Blue, The Souvenir, Ford v Ferrari, Time, Screw and Hijack. These projects allowed him to work across different genres and with a variety of established actors and filmmakers.
jack mcmullen waterloo road role in the BBC prison drama Time was particularly significant because it showed McMullen in a much more mature dramatic setting. jack mcmullen waterloo road later appeared in the Apple TV+ thriller Hijack, expanding his television work further. These roles helped move public attention beyond his early identity as Finn Sharkey and demonstrated the range he had developed as an actor.
Jack McMullen in This City Is Ours
jack mcmullen waterloo road took a major role in the BBC crime drama This City Is Ours. jack mcmullen waterloo road played Jamie Phelan, the son of Ronnie Phelan, a powerful Liverpool crime figure played by Sean Bean. The series is set in Liverpool and explores organised crime, family loyalty, ambition and the struggle for control.
The role is especially interesting because it brings jack mcmullen waterloo road back to a Liverpool-based story while presenting him as an adult actor playing a considerably different type of character. Jamie is caught between family expectations and his own ambitions, giving McMullen an opportunity to explore complicated emotions and relationships. The series added another major production to a career that has steadily expanded since his Waterloo Road years.
Why Fans Still Remember Finn Sharkey
Even though jack mcmullen waterloo road has appeared in many productions since leaving Waterloo Road, Finn Sharkey remains one of his best-known characters. The show’s long-running popularity means that new viewers continue discovering older series, while longtime fans remember the original cast and their major storylines.
Finn remains memorable because he was not simply a stereotypical school troublemaker. His story included friendship, romance, grief, family problems, mistakes and personal growth. jack mcmullen waterloo road performance gave the character emotional depth and helped make Finn an important part of the period of Waterloo Road in which he appeared.

Conclusion
jack mcmullen waterloo road connection with Waterloo Road began when he joined the programme as Finn Sharkey in Series 5 and continued through Series 7. Finn’s journey took him from a troubled newcomer to a character who experienced friendship, love, grief, serious injury and difficult personal choices. His relationship with Sambuca and later relationship with Trudi became especially important parts of his story.
McMullen’s career since leaving the show demonstrates that Waterloo Road was only one chapter in his professional life. From his early work in British television to more recent productions such as Time, Hijack and This City Is Ours, he has continued taking on varied dramatic roles.

