 With the completion of the Adelaide Festival Centre in 1973, Sir Robert Helpmann became director of the Adelaide Festival of Arts.The new wave of Australian theatre debuted in the 1970s with the works of writers including David Williamson, Barry Oakley and Jack Hibberd.The Belvoir St Theatre established by John Bell and Richard Wherrett originated in Sydney around 1970 and presented works by Nick Enright and David Williamson.