John Bratby was born in London. Studied at Kingston School of Art 1948-49 and Royal College of Art in 1951-54,where he was awarded a bursary to travel in Italy. However, he was not very stimulated by the art he saw there and subsequently preferred not to travel; his taste for domestic life in England is reflected in his painting. He worked in a harsh realist style, applying the paint thickly in vibrant colours, and portraying sometimes ugly and desperate faces. He primarily chose his family as subjects and incorporated all the clutter of urban domestic life in his paintings. It was this concern with social realism that brought Bratby into contact with Jack Smith, Edward Middleditch (b 1923) and Derrick Greaves (b 1927), and these artists became the main exponents of the Kitchen sink school. However, while the Kitchen Sink artists shared a desire to depict the banality of a working-class domestic environment, Bratby's use of colours and his more middle-class surroundings distinguished his style from that of his peers. Bratby taught for two brief periods. In the late 1960s he started a series of portraits of celebrities, including the actress Billie Whitelaw; the series developed into a Hall of Fame during the 1970s. He painted cityscapes on trips abroad in the 1980s but concentrated on self-portraits and portraits of his second wife, in intimate poses and with bright colours and an economy of line.
His first solo exhibition at Beaux Art Gallery in 1954, where he exhibited regularly. Represented Britain at the Venice Biennale in 1956. Retrospective exhibition was held at the National Portrait Gallery in 1991. The Mayor Gallery included him in the Kitchen Sink Artists Revived exhibition in 1991. His work is represented in many public art galleries. Elected RA in 1971.