Julie Walters is great in this story of a woman who starts off life working in a café but ends up being arrested for living off the immoral earnings made running a brothel for the great and the good. It's loosely based on the rise and fall of the renowned madam Cynthia Payne (who consulted on the drama) and reaches inside the murky sex industry, laying bare peccadilloes galore as we discover a wide variety of kinks that keep all ranges of society entertained and/or employed. "Christine" is a shrewd business woman whom aided by her stalwart "Dolly" (Danny Schiller); "Shirley" (Shirley…