Graham Booth is a Guardian of the Community of Aidan and Hilda, speaker and retreat leader. David Cole is an international spiritual teacher and retreat leader, the Deputy Guardian for the Community of Aidan and Hilda, and the founder of Waymark Ministries. Simon Reed is an Anglican minister with two churches in Ealing, London, and a Guardian of the Community of Aidan and Hilda. Ray Simpson is a founder and principal tutor of the Community of Aidan and Hilda. A widely published author on spirituality, he also leads retreats on several continents. Penny Warren is a Guardian of the Community of Aidan and Hilda, speaker and retreat leader.