Diageo is launching its latest TV execution in the global ‘Keep Walking’ campaign for Diageo’s Johnnie Walker, the best-selling Scotch whisky in the world. It marks the first time that Martin Scorsese, director of cult film Taxi Driver, has starred in an ad. The ad was directed by Tony Scott, director of Top Gun. Scorsese talks about his life and career, while walking around his old New York neighbourhood. Diageo says the ‘Keep Walking’ campaign encourages people to persevere to achieve their dreams. Last year’s execution featured actor Harvey Keitel. So far, Diageo has spent &£100m on the campaign since its launch in 1999. The ad, by Bartle Bogle Hegarty, breaks in Scotland in September and in other selected UK regions from November. Total media spend is &£1.5m. Media buying is handled by Carat.