Philip Coppens has lectured since 1995 across the world, including:

• Ancient Astronaut Society World Conference (Bern, 1995; Orlando, 1997) - Was the megalithic society the mother culture?; (Gelsenkirchen, 1999) - The Search for E.T.'s Smoking Gun
• Frontier lecture (Amsterdam, September 30, 1995) (in Dutch)
• Frontier Symposium (Amsterdam, 2001, 2002, 2005) (in Dutch)
• UFO Symposium (Belgium, 1998) (in Dutch)
• Saunière Society Conference (Gullane, 1999) - John the Baptist in Florence and Bruges; (Newbattle Abbey, 2001); (Newbattle Abbey, April 2002) - Perillos: The Grail Castle?; (Newbattle Abbey, November 2002) - The Setons and Alchemy; (Newbattle Abbey, 2003); (Dalkeith, April 2004); (Newbattle Abbey, November 12, 2006); (March 31, 2007) - Two priests, two estates, one cult?; (November 1, 2008) - The Mitchell-Hedges skull: a new understanding
• Fortean UnConvention (London, April 2002) - The X Files and Modern UFOlogy
• Nouvelles Lumières sur Perillos (Opoul, November 20, 2004) - Ramon de Perillos and St Patrick's Purgatory; (Opoul, November 19, 2005) - Le culte des tombeaux (in French)
• Les Pyrénées égyptiennes (Opoul, February 25, 2006) and Le Graal (Opoul, April 30, 2006) (in French)
• Questing Conference (London, November 5, 2005) - The Truth About Egypt's Star Religion
• Unexplained Mysteries Conference (Dorchester, April 15, 2007) - The New Pyramid Age
• Nexus Conference 2007 (Novotel Twin Waters Resort, Sunshine Coast, Australia, October 20-22, 2007) - Pyramids in Europe and Crop Circles in 2007
• Megalithomania (Glastonbury, May 17-18, 2008) - The Mitchell-Hedges skull: a new understanding
• The First International Scientific Conference Bosnian Valley of the Pyramids (Sarajevo, August 25-30, 2008) - The New Fire Ceremony: kingship & renewal as a template for pyramid construction
• Middle East Project Management Forum 2008 (Dubai, November 18-19, 2008) - The Great Pyramid: a course in project management
• Histories & Mysteries Conference (Edinburgh, November 22-23, 2008) - The Lothians: Land of the Gods
• Probe International UK (St Anne's/Blackpool, March 28-29, 2009) - The Grail: from myth to reality
• and at several small gatherings, such as the Edinburgh Fortean Society, The Moot with No Name, The Edinburgh Theosophical Society, and many others.

• "Coppens finished the day with a brilliant talk on 'God, Money and Secret Societies' which left most gasping for more."
  John Millar, Saunière Society chairman
  
• "I attended the Nexus Conference last weekend and just wanted you to know how much my friend and I enjoyed your presentation. It was not only informative but very entertaining."
  Veronica Wood, NEXUS Conference delegate
  
• “I was looking forward to seeing this speaker more than any other because I’m a big fan of his articles […]. He is a calm and softly-spoken man who is full of knowledge. […] He didn't let me down.”
  Ben Emlyn-Jones, Probe Delegate