When I visited coffee farms in Ethiopia, the farmers could not believe we spend a week's wages in their country on a cup of coffee in ours, because they see so little of the profits. Oxfam's fair trade campaign helps right this wrong.

I have a great deal of respect for the craft, I don't know how much respect it has for me. But it's a precision process. Doing it on stage would be, I think, terrifying. Doing it on film has its own difficulties, because film is not conducive to spontaneity. You might have a run through and get a few chuckles at eight o'clock in the morning, but you don't keep laughing at the same thing all day long.

It's an unknown quantity. It's actually almost a cliché to say it, how hard comedy is. What's that famous quote? "Dying is easy, comedy's hard." I think the broader it gets, if you miss by a millimetre, you've missed completely. It's a very hard thing to do.

One of my grandfathers, actually, having gone out there as a minister, decided he would better serve the people as a doctor. So at a very late age - at the age of 38 in fact - he changed course and decided to become a doctor.

I do also think it eludes genre a bit - not in any groundbreaking way but you can't quite call it a comedy and you can't quite call it a romantic anything. It's not quite a drama either really. But it has elements of all those things.

I work with the options I have in front of me and my reasons for choosing a job can vary enormously depending on the circumstances. Sometimes I take a job because it's a group of people I'm dying to work with, and sometimes it can be a desire to shake things up a bit and not to take myself too seriously.

I absolutely don't care about my looks and I'm so used to them that I wouldn't change a thing. I would end up missing my defects.