Say Hello to Yesterday is a 1970 British drama film directed by the Canadian born Alvin Rakoff, on whose original story the film is based. Starring Jean Simmons and Leonard Whiting, it is a fast moving account of ten hours in the life of a suburban housewife and was made at Twickenham Studios and on location in London and Hampshire.
The Boy moves up and down the crowded corridors. The Woman in her nonsmoking compartment badly wants a cigarette and starts to scrape away a No Smoking sign. The Boy is attracted by this middle class rebellion, pulls the sign off and presents it to her says Hello and tries to engage her in conversation.Later, battling her way into a department store she finds he has followed her. Leaving the store, she thinks she has lost him. But he catches up with her on a crowded pavement. She tries to throw him off, he finds her again. She flees to her mothers apartment followed by the Boy. The Woman is desperately embarrassed and tries to explain, but her mother treats the whole thing lightly and the Woman learns with surprise that her mother had a past. Mother says Hes good for you. If you have an affair with him youll regret it. On the other hand if you dont have an affair with him youll also regret it... Inevitably, they do have an affair. ........
Source: Wikipedia