Zosia March is a fictional character from the BBC medical drama Holby City, played by actress Camilla Arfwedson. She first appeared in the series fifteen episode "The Kick Inside", broadcast on 10 September 2013. Zosia arrives at Holby City hospital to start her first year of the Foundation Programme. Zosia has vested interest in psychiatry and has worked on both Darwin and Keller wards mentored by Elliot Hope (Paul Bradley) and Sacha Levy (Bob Barrett) respectively.