Question to the Department of Health and Social Care:

To ask the Secretary of State for Health and Social Care, what assessment his Department has made of the ability of hydroxyl free radical air purification technologies to prevent the primary cause of covid-19 transmission via aerosol and water droplets.

The Innovation and Partnerships team NHS Test and Trace concluded that there is a limited evidence base on the effectiveness of air cleaners which use hydroxy radicals as a method of purification against COVID-19. They also found that these cleaners may generate undesirable secondary chemical products that could lead to health effects such as respiratory or skin irritation.