I'd love to talk with Martin Luther King, just to hear his voice up close and be with someone who had such faith. He had such power.

I started reading DC stuff much later in my life. You realize that there's a huge difference between the Marvel universe and the DC universe and the characters that own it.

It's pretty hard to stand in the queue auditioning to play a gynaecologist on 'Holby City' when you've just played Mandela. You think, 'Actually, I want to challenge myself.'

If people see that I'm fully committed to my chosen charities and fully engaged in their issues, maybe they'll click a link to find out more.

I always tell younger actors that if they want to learn the ropes, there's no better place to do it than right here in the U.K.

Myself, I believe that black theatre continues to evolve, and the success of writers like Bola Agbaje and Rachel De-lahay is proof that fresh voices continue to emerge.

Let's just say I like acting, but not necessarily all the stuff that comes with it.

I love New York. New York is busy. It's dirty. It's smelly. I'm a real urban animal: I love cities. I like being in the middle of it all.

Everyone wants to be James Bond, and there's a queue of guys ahead of me - but I will throw my hat into the ring. Bond is such an iconic role, you would have to seriously think how to approach it.

British people are surprised that I'm British! It's extraordinary, I get tweets every day from British people saying, 'I had no idea you were British.'

We all know the wonders of Skype, but there's nothing like getting a hug from your daughters or taking them to school.

There are structural problems within the industry that are preventing us from displaying aspirational black roles.

Working with Olivia Colman has probably been the highlight of my career so far.

When I was in South Africa, I went for dinner with some friends, and I knew more about their history than they did - it just hasn't been told.

I try to ensure my daughters are not spoilt. They are very aware of how lucky they are and appreciate it. We have had some lean years, so they know it's not all about luxury, travel, and hotels. They are grounded, and I'm grateful for that.

For all its problems, I found South Africa a beautiful country, interesting and inspiring.

On the red carpet, one tip is to suck in your cheekbones - apparently it looks better on camera. I don't know, though; I think a nice smile is best.

We live on a planet of limited resources - an abstract notion for some of the world's population, but for many of the poorest and most vulnerable, those limits are all too real.

When I was sent the script for 'Homeland,' I didn't think anything of it. Three months later, my manager rang and said: 'They are interested in you.' I read it and I realised, 'Yes, I do want this.' Then I got an email saying I'd got it.

As an actor, whether I'm playing Othello on stage or David Estes on 'Homeland,' that ability to give into your imagination is something that I enjoy.

I grew up in Birmingham, but my parents are originally from Barbados. My dad, Romeo, was a long-distance lorry driver, and my mother, Mayleen, worked in catering.

There was the 'Cosby Show' in America in the 1980s, which was a doctor in a beautiful Brownstone middle-class house. We just haven't created a role like that in the U.K.; it's always gangs and crime. We need to be brave.

As an ambassador for the aid agency Cafod and the Anthony Nolan Trust, I need to be sure that my public support for those charities is a help for their work, not a hindrance.

If people of colour do not exercise their democratic right to vote, they will remain an invisible, voiceless, and largely ignored part of the electorate.