comic Katherine Ryan discovered her inner shrinking violet when she had to act a sex scene in new sitcom The Duchess, about a single mother, which she both wrote and stars in. Ryan, 37, who, like her screen alter ego, is a single mother with a young daughter, says: ‘What I hated was any sex scene. I will never do another. ‘It was handled very well — there was no actual nudity, so I don’t know why I found it so hard. I didn’t know I was such a prude.’ Well, it was you who wrote those scenes, Katherine.