As a writer myself, my job has very often been to also write on the job. So you get the script and a vague idea of how the scene might work, and you then add funny words or change the script. I'm not the world's best writer or the world's best actor, but I can do that thing where I can fix - or ruin - fix-slash-ruin, add quirk, add value.

I tell people that I'm a Christian, but I don't think it's giving an insight into who I am or what I'm about.

When I'm a brunette, it's four times harder to hail a taxi. Then I go blonde again, and suddenly there are taxis everywhere.

Bad impulse buys make you feel grim, don't they? It's like having consumer Tourette's. I gravitate towards austere foreign-language film DVDs when insecure.

My mum's from Yorkshire and my parents aren't snotty or posh - they're very hard workers, both of them.

Red carpets and dressing up are a part of work that I enjoy less than some people.

What having a Down's syndrome child isn't - and I feel very strongly about this - is a tragedy. All those pregnancy books you read when you are expecting refer to Down's syndrome as if it were the worst possible outcome, and it's not.