Will Poulter made his screen debut in the 2007 comedy film ‘Son of Rambow’ directed by Garth Jennings. The film received a positive response from critics and holds a 73% approval rating on Rotten Tomatoes. In 2010, he portrayed ‘Eustace Scrubb’ in the fantasy-adventure film ‘The Chronicles of Narnia: The Voyage of the Dawn Treader’ directed by Michael Apted. Even though the film opened to a mixed critical reception, it managed to gross over $415 million on a budget of $140–155 million. The following year, he played the role of ‘Dean’ in the Dexter Fletcher-directed British crime comedy-drama film, ‘Wild Bill.’ The film received positive reviews from critics. He next portrayed ‘Kenny Rossmore / Kenny Miller’ in the 2013 American crime comedy film ‘We're the Millers’ directed by Rawson Marshall Thurber. Despite receiving mixed reviews, the film enjoyed an impressive run at the box office and grossed over $270 million on a budget of $37 million. Poulter also won the ‘British Academy Film Award’ and 2 ‘MTV Movie Awards’ for his performance in the film. He next starred in films like ‘Plastic’ (2014), ‘The Maze Runner’ (2014), ‘Glassland’ (2014), ‘The Revenant’ (2015), ‘Kids in Love’ (2016), and ‘War Machine’ (2017).
In 2017, he starred as ‘Philip Krauss’ in the American period crime drama film ‘Detroit’ directed by Kathryn Bigelow. Even though the film earned praise from critics, it failed to perform at the box office. He continued to star in films such as ‘Maze Runner: The Death Cure’ (2018), ‘The Little Stranger’ (2018), ‘Bainne’ (2019), ‘Midsommar’ (2019), and ‘The Score’ (2021). He was last seen in the 2022 television miniseries ‘Why Didn't They Ask Evans?’ where he played the role of ‘Bobby Jones.’ He is all set to appear in the upcoming American superhero film ‘Guardians of the Galaxy Vol. 3.’