Mann later moved to London in the mid 1960s to go to graduate school in cinema. He went on to receive a graduate degree at the London Film School in 1967. He spent seven years in the United Kingdom going to film school and then working on commercials along with contemporaries Alan Parker, Ridley Scott and Adrian Lyne. In 1968, footage he shot of the Paris student revolt for a documentary, "Insurrection", aired on NBC's "First Tuesday" news program and he developed his '68 experiences into the short film "Jaunpuri" which won the Jury Prize at Cannes in 1970.