Turtle Diary [1985] [DVD]

Two separate people, a man and a woman, find something very stirring about the sea turtles in their tank at the London Zoo. They meet and form an odd, but sympathetic camaraderie as they plan to steal two of the turtles and free them into the ocean. Screenplay by Harold Pinter.

There is some minor flicker at the start as you'd expect from some transfers.