Gorilla tourism is vital to Rwanda's economy: It's the third highest source of income.

I suppose the biggest strain was that Hoodwink is a high-octane character and he's up there like all the time. Once he's on his journey there's no let up for the man, so I actually found it a massively exhausting job to keep that level up.

I'm in the early stages of a film called 'Freezing Time' about Eadweard Muybridge, the Victorian photographer who was really the forefather of cinema. Digital animators still treat his images like the Bible. He was a very obsessed man.

I remember once, I read in a horoscope, because I'm an Aries, I read this terrible thing, which really affected me, which said, "You will never be original. You will always be an interpreter." (Laughs) I thought, "Oh my God." You know, I had to live with that on my back for [all my life].

Hoodwink is a product of his environment. He grew up in Belfast, he was part of the UDA and he fought for what he believed in - or was brainwashed into believing - because of the people that surrounded him.

I believe that when people experience an event as a community it can transcend and change people's lives.

Working from home is so, so hard because I want to be present for them and yet there's so much to do work-wise. That's the biggest challenge for me.