The weekly arts magazine POP GOES THE HAYWARD On July 9 London's Hayward Gallery becomes host to one of the largest exhibitions of Pop Art to be seen in this country. In the words of one of its exponents, Pop Art is Young, Witty, Sexy, Glamorous, and Big Business. It is an instant art form and has had instant success. Robert Hughes talks to leading pop artists in New York amid the ad-mass living that inspires their art. including: Roy Lichtenstein , Robert Indiana Jasper Johns , Claes Oldenburg James Rosenquist , George Segal Andy Warhol Directed by Michael MacIntyre HENRY MILLER AND SEXUS ' His reputation originally rested on smuggled copies of what were thought to be dirty books-Tropic of Cancer and Tropic of Capricorn. Now Henry Miller is seen as one of the major literary figures of the century. Prophet and philosopher, poet of Paris in the 1930s, his uninhibited enthusiasm for sex and loathing of American society have made him, at the age of seventy-eight, the hero of the Beat Generation. Sexus is his most autobiographical work and the most controversial. On its publication for the first time in England, Henry Miller talks to RELEASE