Mr. Burton follows the formative years of Welsh actor Richard Jenkins, later known as Richard Burton, and his mentor Philip Burton, a schoolteacher who sees his raw acting talent and becomes his tutor, taskmaster, and adoptive father amid family struggles and the backdrop of war. The film features standout performances from Toby Jones and Harry Lawtey, praised for their chemistry and depth. Critics commend its evocative exploration of mentorship, lush cinematography, and nuanced character work, earning high scores on Rotten Tomatoes and multiple award nominations.