"Philip Mantle is a highly regarded and active British author/co-author, publicist, lecturer, broadcaster and researcher of Unidentified Flying Objects. He has achieved many milestones since his interest in UFO research began in 1979 when he joined the British UFO Research Association (BUFORA), and Yorkshire UFO Society (YUFOS). He was nominated "Investigator of the Year" by YUFOS in 1985.
"In 1987, he was appointed to the Council of Management of BUFORA. He subsequently acted as Press Officer, Conference Organizer, and Secretary to the National Investigations Committee... Philip was appointed the Mutual UFO Network's (MUFON's) United Kingdom Representative in 1988.
"In 1992, he was awarded honorary membership in the Research Institute on Anomalous Phenomena (RIAP), a science based UFO-study group based in the Ukraine. And in 1993, he was appointed Director of Investigations with BUFORA...
"Along with articles, Philip has published numerous books, including a 2005 e-book on the now famous Alien Autopsy, which aired in the U.S. The book, Alien Autopsy Inquest, is the most comprehensive tome to-date on the controversial ‘alien autopsy film’. This film is the most controversial film in the history of UFO research. Launched onto an unsuspecting public by its owner Ray Santilli in 1995, this film has made its way into popular culture and is still debated and discussed around the world. Philip's book provides all the facts from all the experts and allows the reader to reach their own conclusion. Other books include Without Consent (1994), Beyond Roswell (1997), and was a consultant for Hamlyn Children’s Alien Evidence (1998) and Alien Contact (1999), as well as The Soviet UFO Files (1998), Abduction - Encounters with Extraterrestrials (1999), and UFO-USSR (2005 e-book).
"His ongoing projects include work with UFO-LINK, with journalist and public relations consultant Carl Nagaitis. UFO-LINK is a UFO consultancy group aimed at working with and providing UFO material to the media. Also, in 2001, he has been actively involved with 'The Mystery Club'at Batley Boys High School, West Yorkshire.
"Philip has also been involved in magazine editorship and consultancy work with numerous magazines, including Quest Magazine, Beyond Magazine, British European Associated Publishers LTD, where he was a consultant from December 2000 to March 2001 on a new magazine project, and UFO DATA magazine." 
- BEYOND ROSWELL - Marlowe & Company (USA) 1997 - Co-authored with German researcher Michael Hesemann, this was first published in 1997 by Michael O’Mara Books Ltd (UK). 
- Philip Mantle was also a consultant for THE SOVIET UFO FILES, which was published Quadrillion Publishing Ltd. This book was authored by Paul Stonehill of the Russian Ufology Centre, and was published in October 1998. Philip Mantle was a consultant on a book in 1999 for Quadrillion Publishing Ltd