David Pawson M.A. B.Sc. Formerly a Pastor at Gold Hill in Buckinghamshire and the Millmead Centre in Guildford. He now has an itinerant ministry, mainly to Church leaders in the UK and Overseas. He is a writer and speaker of urgency, clarity and uncompromising faithfulness to the Scriptures. He is widely considered to be one of the UK's finest biblical expositors.

Art Katz (February 13, 1929 – June 28, 2007) was an author and Christian preacher who traveled the world teaching an alternative to what he described as today's "make nice" Christianity. Born to Jewish parents, he was a self-proclaimed Marxist/atheist who was converted to Christianity while taking a year sabbatical from his Oakland, California, teaching job and traveling through Europe in 1963.