• bringing in fresh air to occupied spaces to help to reduce the concentration of respiratory particles, lowering the risk of airborne transmission of respiratory viruses. The guidance references HSE guidance on how to assess and improve ventilation in line with health and safety requirements under Workplace (Health, Safety and Welfare) Regulations 1992 and detailed Covid-19 specific guidance for workplaces and public buildings provided by the Chartered Institution of Building Services Engineers (CIBSE) “for those who wish to put additional measures in place”; and