Crow Road and Harry Potter actor Sean has stepped into the shoes of physicist Chris for Shada. He told us how Douglas Adams has influenced him.

What is the most bizarre book you have ever read?

What has been your worst lapse of fashion?

What's your favourite moment of your character?

How do you imagine your character looking?

What are your favourite memories of Doctor Who?

How have you been influenced by Douglas Adams?

Who were your childhood heroes?

Do you think Potter will last like Who?