I remember coming back to the U.K. after spending five months in Charlotte for 'Homeland,' and I just found myself just wandering around London. There's nothing like it - the buildings, the architecture, the sense of history, the sense of culture - there really is nothing like it.Collection: Architecture
I didn't go abroad until quite late. A friend drove us to Amalfi, Italy, for his sister's wedding when I was a teenager. It was exciting driving through Europe.Collection: Wedding
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.Collection: Smile
My parents are very proud of my success but still worry, as I'm in a profession where there is no guarantee of work. They have always supported my decision to go into acting, but there have been tough times work-wise.
My black hero is and always will be Martin Luther King, not just because of the strength of his oratory but because his vision was very much the reality that I'd come to take for granted.
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.
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.
Birmingham people are the salt of the earth, and I've carried that with me all around the world. People respond to a certain down-to-earthness that I have, and that's purely as a result of coming from Birmingham.
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.'
There are countless fantastic actors out there who are being denied the opportunity to play Broadway because they're not a name, and I think that's kind of wrong.
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.'
When my agent told me I had an audition for 'Friar Tuck,' I burst out laughing. It actually brought a bit of sunshine to my day. I was thinking: fat suit. I was thinking: shaving my head. It was so outlandish, such a crazy idea.
I've done so much different stuff, people kinda go, 'Do you live in Islington?' 'Did you used to go to so and so school?' And when I say I'm an actor, they don't believe me!
It would be extraordinary if the BBC were to make me the first black 'Doctor Who;' it would be extraordinary.
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.
You have to have a certain single-mindedness if you want to reach the top of the profession, and I'm not sure if I've got that cold-eyed egomania that perhaps is needed to get to the top. So as long as I can keep paying the mortgage and keep myself interested, I'll be happy.
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.
At school, I was the classroom clown - I was always being thrown out for being naughty. Before I left, a teacher called me in and suggested I became an actor.
Art is all about the experience. I could say I don't really relate to opera, but then you watch Placido Domingo, and you go, 'Blimey, look at that.'
I remember when I first came to Los Angeles being staggered by the range of roles open to me. These were leading parts in shiny new projects, and what always excited me was knowing there was a possibility that I could actually get these parts. I always had the impression that I had a chance.
Before recording my 'Homeland' audition on my iPhone in my bedroom in Streatham, I hadn't worked or had an audition in the U.K. for nine months.
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.
I am the youngest of four children - three boys and one girl. I don't think becoming an actor had anything to do with seeking attention, though. My relationship with my siblings when I was growing up was close and playful.
I do know in the 1960s comics, Martian Manhunter took on the form of a black man - that could have been influenced by the political climate back then.
American television, for all its faults, still has a black presence in shows and even in commercials. You'll see black people in automobile ads, black women starring on their own television shows. We don't see that on British television.
Without a doubt, the majority of historical period dramas tend to be told from a certain perspective. At least in America, black people have some visibility in period dramas, although it's usually in the form of slaves or servitude.
We've yet to deal with the uncomfortable history of England being involved in the transatlantic slave trade, whereas America has at least made some movies dealing with its racial history.
Before 'Homeland,' I had £80 in the bank and no idea what I was going to do. I seriously considered giving it all up and getting a job as a lorry driver.
In England, you feel like a member of the revolutionary guard the minute you even mention race. But I do think that the OscarsSoWhite phenomenon will have to reflect back on England. What people are essentially saying is that they want to see more diverse stories. It's not about putting three black people in the back of the shot.
Studio heads seem to be getting the message that there is not only an audience out there, but there is a desire for people to see people of colour in central roles and in authoritative roles.
I've been acting for 27 years, and anonymity has always been a part of what I do. Of course you get recognised every now and again, but 'Homeland' pushed me into a completely different strata, and that took me by surprise.
You don't just win an Oscar because you're a great actor. You campaign for that Oscar: you engage with it; you go on the David Letterman show, and you do the interviews, and that's how you get out there.
I grew up in an environment in Birmingham that was really multicultural, with black kids, Irish kids, Indian kids.
I can only appreciate the kind of work that goes into being a top drag queen. Ru Paul looks just astonishing as a woman. And he's got this fantastic turn of phrase. I find him hilarious.
I've been on 'Mastermind' - I tied for first place and then lost on the number of passes. My subject was the 'His Dark Materials' trilogy by Philip Pullman. If I did it again, I'd choose Shakespearian tragedies.
You always want to look your best at events like the Globes, Emmys, or Oscars. It's a part of the business that I am not particularly comfortable with. I would prefer to turn up in a pair of jeans and an old shirt, but it's all about image - the studio wants you to look your best.
I hope my kids can experience the seasons and a climate that's sustainable. The idea that things are going to be so very different for them is slightly scary.
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.
Support for charities takes many forms. Some people give their money, some their spare time. I give my name and my voice. We give what we can to make a difference to the people and issues that matter to us. But what's most important, especially for celebrities, is giving our genuine commitment.