The Guardian's Nancy Banks-Smith provided a short review of the first installment of the programme, and it seems to have done nothing to improve her opinion of the genre:
The stars of Mills and Boon seemed less eager to appear. [...] I would have liked to hear from Miranda Lee, writer of The Billionaire Boss's Forbidden Mistress. As Wodehouse said of a romantic novelist: "A simple apology is all that is required."That doesn't sound like a new convert to romance-reading, then.
But for anyone who would like to know more about Miranda Lee, there's a 2002 interview she gave here. Apparently she's Emma Darcy's sister. And there's a list of her novels here.