Matt Smith and Karen Gillan in The Sun Buzz

We’ll go to the supermarket every night, get a sandwich, and trot home to learn lines. Sometimes we’ll phone each other and say: ‘How’s it going? Really badly? Me too. Do you want to come over and practise?

I’m terribly fond of Karen - we’re good pals. I’ve learnt how to make her laugh during filming. I can say a word in a silly voice, and she’ll go. Karen can do it to me to. It’s that old Smith-Gillan banter - it’s become quite famous on set.

We have such a laugh, except when he does his ‘moth thing’ because I am scared of moths.