Nick Redfern has worked as a freelance feature writer for the Daily Express, People, Western Daily Press and Express & Star newspapers, as well as a full-time feature writer for Planet on Sunday. He has been a freelance journalist for the British newsstand magazines The Weekender, Animals, Animals, Animals, Pet Reptile, Military Illustrated, Eye-Spy, The Unopened Files and The X-Factor.

With Simon & Schuster of London he wrote of A Covert Agenda: The British Government’s UFO Top Secrets Exposed (1997), The FBI Files: The FBI’s UFO Top Secrets Exposed (1998) and Cosmic Crashes: The Incredible Story of the UFOs That Fell to Earth (1999).

Redfern works the lecture circuit, both in the US and overseas, and has appeared in internationally syndicated shows discussing the UFO phenomenon. Redfern is a regular on the History Channel programs Monster Quest and UFO Hunters, National Geographic Channels's Paranormal and the Syfy channel's Proof Positive,
He has been identified as a member of an informal group of friends often called others as the "Paranormal Rat Pack" and "The Cabal"; other members are filmmaker Paul Kimball, and authors Greg Bishop, and the late Mac Tonnies.

In 2012 Redfern took on the role of on-air radio talk-show host of a paranormal themed internet radio show Epic Voyages Radio produced by the Inception Radio Network.