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