Guest Stars Fifi Fox as Sarah Beatty Tallulah Fox as Sarah Beatty Tuppence Middleton as Vicki Walmsley Catherine Steadman as Polly Beatty Sanjeev Bhaskar as Kanan Dutta Neil Stuke as Professor Andrew Crane Lesley Vickerage as Katherine Dutta Dominic Mafham as Frank McLean Emily Joyce as Jane Grace Beatie Edney as Justine Skinner Adam Wadsworth as Joshua Grace Marty Cruikshank as Woman Interviewee Edwin Thomas as Reuben Beatty Suzette Llewellyn as Susan Smith Carol Harvey as Mandy Uncredited Kirsten Foster as WTC Stapleton Hermione Gulliford as Lucy Sopher
