Guest Stars Bhavnisha Parmar as Sonya Khan Sharon D. Clarke as Grace O'Brien Everal A. Walsh as Gabriel Buom Tihngang as Tibo Clare-Hope Ashitey as Rakaya Ian Gelder as Zellin Willie Jonah as Old Tibo Nasreen Hussain as Anita Patel Aruhan Galieva as Tahira Sirine Saba as Maryam Anthony Taylor as Andrew Michael Keane as Fred Amanda Liberman as Mum