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