After a stint in Bart's Maggie May in 1965, Brown concentrated on screen work for more than a decade. She appeared as a singer in A Study in Terror (1965), followed by a number of films, including The Fixer (1968), Lock Up Your Daughters (1969), The Raging Moon (1971, for which she was nominated for a BAFTA Award), Running Scared (1972), Nothing But the Night (1973), Tales That Witness Madness (1973), Galileo (1975), The Seven-Per-Cent Solution (1976) and The Bawdy Adventures of Tom Jones (1976). She also appeared in several television dramas, including the BBC's highly acclaimed The Roads to Freedom, a 1970 adaptation of Jean-Paul Sartre's trilogy for which she sang the theme song "La route est dure".
