Toby Sebastian is an English actor. He started his acting career in the 2010s. He made his cinematic debut with the movie After the Dark. Around the same time he also made his first television appearance with The Hollow Crown. His next performance was on the American miniseries The Red Tent. Subsequently, he played the role of Cash Fenton in the independent film Barely Lethal. He next portrayed the role of Trystane Martell on Game of Thrones. This year, he appeared in the movie The Music Of Silence. He will appear in the upcoming 2018 film Trading Paint.