Sigourney Weaver in Half Moon Street (1986)

Dr. Lauren Slaughter, a brilliant research fellow at the Arab-Anglo Institute in London is utterly frustrated by her career. To supplement her income, she starts moonlighting at the Jasmine Escort Service, where she has more control over men and money than she does at the office. On one of her dates, Lauren meets the politician Lord Sam Bulbeck who is trying to mediate a peace accord between the Arabs and Israelis. Bulbeck falls in love with his escort, and unwittingly, Lauren becomes a pawn in some very dirty politics.