You dread that there will be real problems during filming.

I'm sure acting is a deeply neurotic thing to do.

The sets were fantastic. The Harry Potter sets are brilliant. You do get transported for a second.

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.

Education, awareness and prevention are the key, but stigmatisation and exclusion from family is what makes people suffer most

Within the process of filming, unexpected situations occur.

It's great to be on a set where there's time and there's focus and there's also a kind of adrenaline thrill on a set where people are saying: "We have to get this shot, we've have to go, we've got to move on!"