What first attracted me to doing Swiss Army Man was just how mental it was - how insane and wonderful and original the script was.

To be fair, it's not even the first time I've seen a dead version of myself. There was one on Harry Potter, on the last movie, that they actually used to bring to set in a body bag.

I certainly want to establish myself as an actor in my own right, rather than being just the actor who plays Harry Potter.

If you spent a proper amount of time with me, you would probably wonder if I was on drugs - I'm not. I'm just incredibly hyperactive and manic. I can be quiet and serious at the same time.

My dad's got a brilliant eye for scripts 'cos he's a literary agent. He and my agent read a load of scripts and filter them.

I don't think that you necessarily need a certain type of background to take on roles. You see actors from very, very privileged backgrounds playing working class characters and vice-versa. I don't think your background limits you as to what you can do.

I had one relative who passed away but fortunately none others. So my sort of experience of it is quite limited, thankfully.