Kneeling on a sofa in her producer's office, Amelia-Jane Rutherford feels the of his will as Mr Cameron lays a leather strap across her bare bottom 28 times. A few strokes on panties are followed by the balance on tantalisingly bare skin. Amelia swiftly realises that late-night clubbing doesn't fit with morning rehearsals for her latest movie, in Diva Discipline.