Guest Stars Orla Russell as Poppy Lois Chimimba as Tara Kierly Bobby Rainsbury as Cronin Cristian Ortega as Anderton Martin Compston as Chief Petty Officer Craig Burke Anita Vettesse as Petty Officer Jackie Hamilton Tom Gill as Chief Petty Officer Adams Reuben Joseph as Porter Oliver Lansley as Mark Hill Therese Bradley as Laura Michaels Parth Thakerar as Jay Kohli Bhav Joshi as Chief Petty Officer Deerborne Suni La as GP Aileen Clarke as Journalist