An acclaimed British documentary filmmaker, he is renowned for his distinctive style, often characterized by his presence in the narrative. Emerging in the 1970s, he gained recognition for tackling controversial and complex subjects, frequently exploring themes of power and societal issues. His notable works include documentaries on figures like Kurt Cobain and Aileen Wuornos. With a career spanning decades, his films are celebrated for their investigative depth and personal engagement with the subject matter.