WC: Has the enormous Harry Potter fanbase prepared you for the hype that surrounds The Walking Dead?
FD: Probably to some extent. Although it doesn't really affect me personally. I don't really see a lot of difference in my life since I was six. It's not like I'm getting mobbed or anything. Occasionally somebody will say something nice and that's it, and you just get on the Tube and go to the pub or whatever just like normal. All that mayhem and stuff, it's all much more hysterical to the people involved in creating it. It just doesn't affect me at all.
WC: How did you adapt to the American accent?
FD: I think the Americans are a lot more interested in accents. Accents are all just technical, technical things. I worked really, really hard at it actually though because you can always tell when somebodys putting on an accent, well at least I think so. If one word slips up then I'm just sitting there wondering whereabouts they're from. It's my favourite thing when people say: Oh hey, you're English. It's a thrill to know that people don't know I'm English.
WC: Can you tell us a bit more about "The Cufflinks Guy" Nick just met?
FD: Well those writers, they've got something up their sleeve. I just don't know, that's the thing, you never know with television. You're almost up to date with me, I'm only one plot section ahead of you. Otherwise, I don't really know what's going on with him. We don't really know who he is just yet.
WC: What's the future looking like with regards to Season 2 and Nick?
FD: I have my hopes for Nick, but they keep it all so secret. Even in the auditioning process, I didnt even get given a script. So until I accepted the part I didnt know about most of Nick's story. I still don't know what's going to go down in Season 2. I really hope Nick ditches the heroin. There's very little you can do with heroin. There's stuff you can do with addiction, but with the heroin, that level of total numbness, there's not a lot further you can go with that, having somebody out of their mind the whole time. I'm hoping he kicks it so that there's other things he can explore other than just going cold turkey and always feeling terrible.
WC: If that's the case, would you like to see Nick turn into a bit of an action hero?
FD: I don't know whether I'd be able to play an action hero. I just can't be arsed to do the training. Nick's a funny one, you never know whether he's telling the truth or not as a character, and you never know whether his heart's in the right place or it's in the wrong place. So it's a bit difficult to judge whether he's a goodie or a baddie.
WC: Will Nick make it to Season 2?
FD: Will he make it to Season 2? Well, you'll just have to see...