Plot hole: Would Holby Control really send two technicians on a shout together? Surely they should have at least one proper paramedic who can perform the activities needed? Also, how come in earlier episodes when Nikki hasn't passed the Technician exam, she still has Technician on her badge, and not trainee or something?
Character mistake: The old photo of Sylvia and her friend shows them in RAF uniform. Sam, who is a serving British Army officer and could be expected to recognise the very obvious differences between the uniforms, keeps referring to Sylvia being in the Army and Sylvia does not disagree with her.