Guest Stars Karl Johnson as Bill Newman Julian Barratt as Benjy Dhillon Maya Sondhi as Lola Dartmouth Derek Jacobi as Sir Ralph Unwin Siân Reeves as Claudia Rose Liz Crowther as Joyce Ransome Donald Sage MacKay as Norm Niedecker Sandra James-Young as Regina Margaret Jackman as Hilary the Gardener Alfie Harrison as Josh Dhillon Ellie Haddington as Diane Romola Garai as Juno Fish Ella Critchell as Poppy Paul Putner as Mick the Porter Dominic Geraghty as Duty Sergeant Sutara Gayle as Sharon