Guest Stars Pui Fan Lee as Su Ping Lim Brett Curtis as George Ruth Sheen as Mrs Beechum Matt Emery as Detective Birch Mark Benton as The Colonel Jack Wheatley as Nigel Blodgett Martyn Ford as Nicolas Perbal 'Odium' Alison Pargeter as Kindly Old Woman Madeleine Wilson as Lady Whisper David Garrick as Wenimar Kroos 'Repeater' Lola Dubus as Dominique Jordan Long as Guard Phil Zimmerman as Signalman Louis Ellis as Nervous New Guy Daniel Tetsell as Phone Line Engineer Katy Baker as Barmaid