Guest Stars Orla Russell as Poppy Bobby Rainsbury as Cronin Lois Chimimba as Tara Kierly 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 Therese Bradley as Laura Michaels Oliver Lansley as Mark Hill Parth Thakerar as Jay Kohli Bhav Joshi as Chief Petty Officer Deerborne Suni La as GP Aileen Clarke as Journalist