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

I have a bee in my bonnet as to how few black historical figures one sees on film; incredible stories, stories from which we are living the legacy and which just don't get made.

I gravitate towards anything that feels challenging to me, that feels like it's gonna be saying something a bit different and new to the audience, and anything that moves me. I do movies that I would want to see, so I don't necessarily gravitate towards any genre in particular. I just try and do the best work I can and also try to keep the audience guessing.

As you know, Sunday at 11 o'clock is the most segregated hour in America. You have black churches; you have white churches; you have Hispanic churches. It's not really reflective of the world we live in, by and large, in America.

Getting to do what I think was my fifth BBC drama with Nikki Amuka-Bird - we've done 'Shoot The Messenger,' 'Five Days,' 'The No. 1 Ladies' Detective Agency,' 'Born Equal' and now 'Small Island' - was another highlight for me. And filming in Jamaica was great, too.

My parents are very hard working people who did everything they could for their children. I have two brothers and they worked dog hard to give us an education and provide us with the most comfortable life possible. My dad provided for his family daily. So, yes, that is definitely in my DNA.

It's fascinating to work with a company of actors of such different ages, experience and talents. I'm one of a generation brought up on television whose acting is more 'naturalistic', whereas with some of the older generation it's more heightened. But I think there's room for both styles.