In some countries, no one knows who Idris Elba is.

People watch three or four episodes at a time of their shows.

Working at BBC, at the head of one of the top dramas, is a tradition for great actors.

There has been a big debate about it: can a black man play a Nordic character?

I'm never shaken or stirred.

I'll always be attached to telly in one way or another, whether it's a character or producer or director, I just love the medium.

Imagine a film such as Inception with an entire cast of black people - do you think it would be successful? Would people watch it? But no one questions the fact that everyone's white. That's what we have to change.