I truly believe slavery is why, as a by-product, we still have a disproportionate amount of black men incarcerated in the USA. It is an extension of that legacy, and that's not going to start to diminish until black people have a new sense of themselves that isn't tied to slavery and feeling inferior. I think the church can be instrumental in that, in terms of repentance, reconciliation and just being more embracing of each other - not just on Sunday, but in life generally.

I know I had my equivalents in Adrian Lester and Lenny James when I was at drama school. I remember David Harewood doing 'Othello' at the National, and Adrian Lester having done Cheek by Jowl's famous 'As You Like It and Company' at the Donmar. Not necessarily performances I saw, but just the fact they happened was massively encouraging.

I truly believe that one of the things that has been lacking in the USA is a spirit of repentance about the injustices of slavery and the injustices of segregation and racism generally.

We can't afford to deny our past in a bid to be empowered. But what we can do is contextualize the past.

Africa is trying to find its way back to a sense of itself, when much of that was lost through colonization.

If you merely focus on what we already know, then it's not revelatory. You may as well just go and watch a documentary or a few videos on Youtube, and you're good.

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.