People have very strong opinions about how their national icons should be played.

What I generally get from being in Africa is a sense of warmth and openness. As a stranger, you are always welcomed into people's homes and people are always offering you food. That generosity is incredibly touching.

I definitely felt frightened [on Skyfall], but never in danger, because they were always so careful about everything. Some of the driving, particularly on that road around the sheer-drop cliff was actually done by stunt driver Ben Collin, who is otherwise known as The Stig from the TV show Pop Gear. He's a brilliant drive, nonetheless, it was terrifying to be careening along when a wrong turn would mean a thousand-foot drop and you're not in control and you want to slow the car down.

I wanted to play roles which offered new ways of viewing black women and black people in general- and I have done that. And I have always, whether I needed to pay the rent or not, I've always turned down roles which I thought were stereotypical. And so when I look at my body of work in that respect, I am really happy. Because I feel my work does say something positive and that was what I always set out to do.

Without education, you really can't dream as a child.

It was also great shooting in London at Pinewood Studios because of all its history. So many of the 007 movies were filmed there, as well as classics by everyone from Marilyn Monroe to Jack Nicholson to Martin Scorcese. It's like working on hallowed ground. So, I felt a responsibility to make sure I did as good a job as I possibly could.

I always find filming stressful. I get very caught up thinking about my character - 'Am I doing it right? Should it be done this way?'