Who is telling the story? Who is the speaker?
Huxley uses an outside, effaced narrator. In other words, the narrator is not a character in the story, and has limited access to the consciousness of the characters. He rarely tells us what a character is thinking; instead he reveals character mostly through action and dialogue. He conveys little sense of his own presence. This allows the author to take an ironic, even cynical tone - relying on implied sarcasm rather than preaching to the reader what precicely he believes.
Huxley tells the story of Brave New World in a third-person, omniscient (all-knowing) voice.
The author, Huxley, tells the story Brave New World in a third-person point of view, which means that the person who is narrating the story had no knowledge and have limited access to the varied emotions and thoughts of the other characters and . You could say that he doesn't play a part in the story, maybe even a stranger to the events. He only describes the characters through dialogues and detailed descriptions or by their outer appearance but cannot dwell into their subconscious minds or their behavior. He represent the speaker as an omniscient type of person, an broadly knowledgeable person.