Joseph Owen Thomas is an English actor and comedian. He is best known for playing Simon Cooper in the award-winning E4 sitcom The Inbetweeners (2008–2010) and its two film adaptions, The Inbetweeners Movie (2011) and The Inbetweeners 2 (2014), both achieving box office success. After The Inbetweeners concluded, Thomas remained connected to Channel 4, joining the cast of comedy-drama series Fresh Meat in 2011, portraying the role of Kingsley Owen until 2016. He was reunited with his The Inbetweeners colleague James Buckley when they both joined the cast of BBC Two sitcom White Gold, with Thomas portraying the role of Martin Lavender. In 2018, he starred in the comedy film The Festival.