Avengers: Age Of Ultron star Robert Downey Jr walked out of an interview with Britain's Channel 4 reporter Krishnan Guru-Murthy after the anchor went on a personal tangent asking questions about the actor's past.

Downey Jr who has been giving promotional interviews for his new film was rather uncomfortable with the questions being thrown at him and eventually decided to bail.

The line of questioning that led to Downey's walk-out regarded a 2008 interview with the New York Times in which Downey was quoted as saying, "You can't go from a $2,000-a-night suite at La Mirage to a penitentiary and really understand it and come out a liberal."

Downey responded to the question saying that opinions change and that he wasn't really sure what he was trying to say back during that interview. (via CNN)

"Are we promoting a movie?" Downey visibly uncomfortable asked Guru-Murthy. The news anchor, not satisfied with the response, kept pushing.

At this point, Downey just gave a look to someone off camera indicating that he would like to stop the interview.

"You say we're promoting a movie... but we'd also like to talk a little bit about you. I don't know how comfortable you are talking about yourself," the anchor said.

"You have as much time as anyone else will," Downey responded with a smile.

The interview broke down once Guru-Murthy began asking the actor about his "dark periods" and chequered past with drugs and drinking.

"I'm sorry... what are we doing?" Downey said, at which point he got up to leave.

This led to Downey cutting the interview short saying to Guru-Murthy on his way out, "You seem okay. It's just getting a little Diane Sawyer in here."

Check out the video below:

Incidentally, this is not the first time Guru-Murthy has irked a Hollywood personality. Back in 2013, the anchor managed to annoy director Quentin Tarantino during an interview for his film Django Unchained. You can watch the video here.