Guest Stars Michelle Greenidge as Carla Sunday Angela Wynter as Cherry Sunday Jemma Redgrave as Kate Lethbridge-Stewart Anita Dobson as Mrs Flood Aneurin Barnard as Roger ap Gwilliam Siân Phillips as Enid Meadows Susan Twist as Hiker Sophie Ablett as Marti Bridges Amanda Walker as Old Ruby Graham Butler as Frank Hinchey Albey Brookes as Rufus Bray Rhyanna Alexander Davis as Elizabeth Campbell Elan Davies as Thin Lucy Hilary Hobson as The Woman Dylan Baldwin as Security Officer Gwion Morris Jones as Ifor Jones David Constant as Armed Policeman Shane David-Joseph as Akhim Patel Sion Pritchard as Joshua Steele Ali Ariaie as Sanjay Miah Deeivya Meir as Newsreader Jason May as Groundsman Miles Yekinni as Craig Deloach Amol Rajan as Himself Vee Vimolmal as Nurse Glyn Pritchard as Eddie Jones Maxine Evans as Lowri Palin