Frozen and Bridget Jones's Baby are two movies that have been deemed "F-Rated" because they are considered 'feminist' films. Both films were written, directed by and starred in by women.
"The F-rating is intended to make people talk about the representation of women on and off screen," added creator Holly Tarquini.
"Our goal is to reach the stage when the F rating is redundant because 50 per cent of the stories we see on screen are told by and about film's unfairly under-represented half of the population – women." [Source]