I thought it was most probably from “Inspector Morse”, but checking a few likely episodes didn’t turn it up.
The scene: a girl student is with her Oxford (presumably) tutor, and he embraces her and kisses her on the mouth. She objects strenuously to the sexual harassment. I remember her having short black hair, but nothing else describable.
Lesser probability, “Inspector Lewis”. Again, nothing.
Or maybe some other show. Any thoughts?