Factual error: The movie depicted the use of obstetrical ultrasound. While ultrasound was first "perfected" in the late 1950s, it wasn't used in British hospitals until the 1970s and not in US hospitals until well into the 1970s, well past the setting of the movie in the 1960s.
Continuity mistake: When she is watching General hospital, the baby in the crib has no shirt on. When the TV goes off and the baby is crying the child has a shirt.