Guest Stars Tom Price as Andy Davidson Cush Jumbo as Lois Habiba Ian Gelder as Mr Dekker Katy Wix as Rhiannon Davies Lucy Cohu as Alice Carter Nicholas Farrell as Brian Green Luke Perry as David Davies Peter Capaldi as John Frobisher Susan Brown as Bridget Spears Julia Joyce as Holly Frobisher Madeleine Rakic-Platt as Lilly Frobisher Bear McCausland as Steven Carter Liz May Brice as Johnson Hilary MacLean as Anna Frobisher Rhodri Lewis as Johnny Davies Aimee Davies as Mica Davies Louise Minchin as Newsreader Paul Copley as Clemet McDonald Gregory Ferguson as Young Clem Simon Poland voices 456 Colin McFarlane as General Pierce Ben Loyd Holmes as Operative Charles Abomeli as Colonel Augustus Oduya Rachel Ferjani as Parliamentary Secretary Lachele Carl as Trinity Wells Christopher James as Press Officer Anthony Debaeck as French Newsreader Patrice Etienne as Sandwich Shop Man