The COVID-19 pandemic has posed multiple significant challenges to healthcare systems. Preparations for the expected rise in COVID-19positive patients in March-April 2020 resulted in 6 out of 12 wards at University College Hospital in London being converted into COVID-19 wards. Many healthcare professionals, including paediatric nurses and neurosurgeons, were redeployed to ensure that wards were sufficiently staffed. The uncertainty of new roles, unfamiliar teams, personal risk and rapidly evolving guidelines led to significant anxiety about redeployment. To address this anxiety and prepare staff for working on the reconfigured wards, we designed a series of half-day clinical simulation sessions accessible to all healthcare professionals and evaluated their impact on participants' confidence.