Why has Huxley chosen to write Brave New World using a third person omniscient narrator?

By using a third-person omniscient narrator, Huxley is able to provide the reader with full knowledge of what is occurring at any time during the course of the novel. This knowledge is not usually available when using first-person narration and allows the reader insight into the minds and actions of many characters.

In a novel such as Brave New World, insights into the actions and thoughts of all of the key characters allows the reader to fully understand and explore the many themes of the novel.