Matthew Gale is an independent art historian and curator. He was formerly Senior Curator at Large, Tate Modern.

Dr Amy Hale is an Atlanta-based writer, curator, and critic, ethnographer and folklorist, speaking and writing about esoteric history, magic, art, culture, women and Cornwall. She writes and speaks on topics as diverse as psychogeography, Pagan religious tourism, colour theory, and politics in modern Paganism.

Hale has written widely on the surrealist and occultist Ithell Colquhoun, and in 2009 she received a grant from the Paul Mellon Foundation for her research. As a gallery writer and essayist, she has contributed essays for Tate, Burlington Contemporary, The Australian Centre for Contemporary Art, Correspondences Journal, Camden Arts Centre, Art UK, Arusha Galleries, Heavenly Records and Spike Island, Bristol. She is an exhibition consultant for the upcoming exhibition on Colquhoun at Tate St Ives.