Britain has written down almost 15 billion pounds ($18.62 billion) in costs related to COVID-19 personal protective equipment (PPE) and other medical items over the last two years, prompting censure from its spending watchdog. The Department of Health and Social Care (DHSC) estimates there has been a 6 billion pound reduction in the value of items procured in response to the COVID-19 pandemic in 2021-2022, the National Audit Office (NAO) said on Thursday.