Guest Stars Aiylah Bhimani as Poppy Shamsie Rebecca Front as Diana Hopkinson Nigel Lindsay as Ricky Hopkinson Sarah Smart as Siobhan O'Hara Karl Collins as Carsten Hughes Dermot Keaney as Taffy Clarke Che Walker as Steve O'Hara Cengiz Dervis as Marac Ata Jack Cooper Stimpson as Finn Davidson Craig Blake as Artie Sylvester Ricardo Castro as Paulo Mendez David Wayman as Estate Agent