Investigative journalist Roger Cook, a British broadcast reporter credited with creating the “doorstep” interview technique, has died aged 83. The New Zealand-born journalist was known for his distinctive approach to interviewing people at or near their homes, a method that became a hallmark of his reporting. Multiple outlets describe Cook as an award-winning figure in broadcast journalism and credit his work with shaping the “doorstep interview” format widely associated with investigative television. His family confirmed that he died after a short illness. Alongside his professional achievements, the statements reported by the outlets also emphasize Cook’s role in his family life, describing him as a beloved husband and father. The reports do not provide further medical details, but they consistently place Cook’s death at age 83 and recognize his contribution to investigative journalism through the interview technique he is credited with inventing.