Guest Stars Barry Sloane as DS Jim Dawson Mark Ivanir as Alexander Goldfarb Daniel Ryan as DAC Peter Clarke Kayla Meikle as DC Deborah Maxwell Temirlan Blaev as Young Anatoly Litvinenko Richard Pepper as DCI Duncan Ball Kirsten Foster as Jenny Hyatt Estella Daniels as Dr Onome George Sam Troughton as DI Brian Tarpey Marcus Onilude as Aidan Nikolai Tsankov as Boris Berezovsky Aleksandar Mikic as Dmitry Kovtun Rad Kaim as Andrey Lugovoy Edward Baker-Duly as Martin Svennson Zoe Telford as Ingrid Campbell Daniel Paton as Russian Driver Sam Marks as DC Oliver Gadney Joanna Kanska as Nika Privalova Simon Haines as Dr. Benjamin Swift Mitya Savelau as Hotel Concierge
