As well as maintaining a column in Cinema Retro magazine each issue, Gareth has written for Total Film magazine, the BAFTA Awards brochure and for newspapers The Telegraph and The Times.
He has nineteen books published, all centring around the UK film business and personalities:
2000 The Pinewood Story (Reynolds & Hearn)
2002 Albert J Luxford: The Gimmick Man (McFarland)
2002 Roger Moore: His Films And Career (Hale)
2004 Alan Hume: A Life Through The Lens (McFarland)
2007 Pictures And Premieres (Hale)
2008 Roger Moore: My Word Is My Bond (Michael O'Mara Books) - Ghost writer
2009 The Shepperton Story (The History Press)
2012 Eunice Gayson: The First Lady of Bond (Signum Books) - Ghost writer
2012 Roger Moore: Bond on Bond (Michael O'Mara Books) - Ghost writer
2014 Last Man Standing (Michael O'Mara Books) - Ghost Writer
2015 Stars & Wars by Alan Tomkins (The History Press) - Ghost Writer
2015 Bond On Bond - updated edition (Michael O'Mara Books) - Ghost Writer
2016 From Pinewood To Hollywood: The Insider Diaries of Paul Hitchcock (Bear Manor Books) - Ghost Writer
2017 Memoirs of a Hollywood Publicist, Jerry Pam with Gareth Owen (Bear Manor Books)
2017 A Bientot, Roger Moore (Michael O'Mara Books) - Ghost Writer
2018 The Price Of Fame: The Biography of Dennis Price (Fonthill Books) - Co-author
2019 Making Movie Magic (The History Press) - Ghost Writer
2020 - Raising An Eyebrow (The History Press)
2021- J Arthur Rank: The Rise And Fall Of A Film Empire (Bear Manor Books)