Guest Stars Arthur Darvill as Ernest Wantage Michelle Fox as Siobhan Amy Beth Hayes as Diana Wantage Shobu Kapoor as Mrs Biswas Shvorne Marks as Bernadette Nigel Boyle as Dougie Barry Aird as Duke Justine Cain as Hilary Elliott Spilling as James Wantage Elizabeth Bower as Mrs Hawksley Liberty Miller as Rosie Tim Murphy as Tony Ninia Benjamin as Clementine Rupert Lazarus as DC Fulton Francis Adams as Truck Driver Azuri Muir as Mr Morrison