The actor shouldn't edit themselves or be anxious. And the actors that I admire are always the ones who are inventive and their imaginative life in free-willing. It's a director's job to go, "No here, don't do that, go there."

Performance is made in the editing room, and I've come to see the truth in that - the idea that they say performances are usually made in the editing room because what you film is the raw material. I think just going through the process of saying, "Which take do we use? Why is that the take we want? I want that take can you edit again, I'm not sure that's the one, I think it's this one." And just because you go through that process, I think somehow it's made me sort of more open about the [actor's] possibilities.

Like anything to do with trust, in any relationship it emerges and just the chemistry, vibe between two people an actor and a director. You just know whether this is someone I like to be with whose interaction with me I believe in.

So much of movie acting is in the lighting. And in loving your characters. I try to know them, and with that intimacy comes love. And now, I love Voldemort.

News reports can overwhelm us. We can be appalled, we can sympathise. But what is hard to grasp is the sense that, at this moment, people are working, organising - not just at an executive level, but on the floor, in the warehouse. A man is packing a box of oral rehydration tablets; maternity kits are being prepared; education kits are being packed. And somewhere, tomorrow, those boxes will be unpacked and a child with life-threatening diarrhoea will be saved, a baby will be born in more hygienic circumstances, a girl will receive her first exercise book and her first pencil.

Voldemort? That might be real.

The actor shouldn't edit themselves or be anxious. And the actors that I admire are always the ones who are inventive and their imaginative life in free-willing. It's a director's job to go, "No here, don't do that, go there."