Born in London, Toby Stephens, 57, is the son of actors Maggie Smith and Robert Stephens. He trained at Lamda and, in 1992, made his film debut in Orlando. In 2002 he played the Bond villain in Die Another Day. His television work includes One Day, The Split and Black Sails. On stage he has performed for the RSC and the National Theatre, and he is currently starring in Equus at London’s Menier Chocolate Factory, until 4 July, and then Theatre Royal Bath, from 14-25 July. He is married to the actor Anna‑Louise Plowman, with whom he has three children, and lives in London.What is your greatest fear?

To be completely alone.What is the trait you most deplore in others?

Vanity.What was your most embarrassing moment?

I was in a restaurant with my daughter in Los Angeles and I had an accident involving a stomach upset. That was mortifying for both of us.What is your most treasured possession?

My wife.What makes you unhappy?