I'm very aware that people find my wife and I's marriage disagreeable. But all I have to do is look at my four kids, and the love I have in my heart for my wife after 18 years of marriage, and the ugliness does fade.

Find the audience, be excellent, and you will be fine.

One of the things the BBC does better than anyone is period drama.

I love that as a black person I've experienced not being a minority. I think that's helped me to combat the minority mentality people can have here, which can stop them scaling the heights.

Whether we like to admit it or not, as artists, we do project our own worldview on to what we do.

The thing that would probably surprise most people was that Dr. Martin Luther King was a very reluctant leader. He felt very shocked at times that he had been chosen for this path, but he also understood that he was chosen for this path. He had several moments of acute doubt as to if he was up for the task - when people were injured in the protests he took it very personally, let alone when they were killed.

I was sometimes called 'coconut' when I was at school.