Tom Hollander Rev. Adam Smallbone Actor, Executive Producer Olivia Colman Alex Smallbone Actor Steve Evets Colin Lambert Actor Miles Jupp Nigel McCall Actor Simon McBurney Archdeacon Robert Actor Ellen Thomas Adoha Onyeka Actor Ralph Fiennes Bishop of London Actor Vicki Pepperdine Geri Tennison Actor Peter Cattaneo Director James Wood Writer Kenton Allen Executive Producer Matthew Justice Executive Producer Hannah Pescod Executive Producer James Wood Executive Producer