He established a particular style marked by erotic, stylised scenes, often with sado-masochistic and fetishistic subtexts. A heart attack in 1970 reduced Newton's output, nevertheless his wife's encouragement led to his profile continuing to expand, especially with a big success, the 1980 studio-bound stark infinity of the "Big Nudes" series. His "Naked and Dressed" portfolio followed and in 1992 "Domestic Nudes" which marked the pinnacle of his erotic-urban style, these series all underpinned with the prowess of his technical skills. Newton also worked in portraiture and more fantastical studies.