This, although a commercial, is based on the true story of everlasting love between Margret McCollum and Oswald Laurence.
Her husband, a voice actor by profession, recorded this particular announcement for the London underground and was being played at almost every station for nearly 40 years. After his death in 2007, the voice announcement system was updated and no longer played his voice.
Margret, who used to sit at the Embankment station for hours just to hear his voice was devastated. When she enquired about the change and explained her story, the management did something amazing for her!