Helen Meads has practiced Experiment with Light since 2000, facilitated workshops since 2007, and studied the Experiment for her PhD. Andrea Freeman has been practicing Experiment with Light since 2002, facilitating introductory Light workshops since 2008 and retreats since 2006. Maggie Owen has practiced Experiment with Light since 2013 and has accompanied Andrea and Helen on retreats and introductory workshops since 2017.