Carole was interviewed for the piece in January but has refused extra promotion, even if it costs her thousands in lost marketing. Last night a source said: "Carole is incredibly proud of her company and all the hard work that goes into it. "But whilst backing the business, she didn't want to turn any news into a media circus because she is so respectful and sensitive to Catherine, and the Royal Family. "She always gets William's go-ahead before any interview like this, and he is incredibly supportive. Carole Middleton has called a halt to a publicity drive for her cover shoot with Good Housekeeping (Image: Getty)