The law says employers must make sure there is an adequate supply of fresh air (ventilation) in enclosed areas of the workplace.
Businesses can do this by using:
natural ventilation - fresh air which comes in through open windows, doors or air vents
mechanical ventilation - fans and ducts which bring in fresh air from outside
The Health & Safety Executive has published updated guidance to help employees and customers stay safe. The guidance includes information on:
identifying poorly ventilated areas
deciding on the steps to take to improve ventilation
assessing the risk from breathing in small particles of the virus (aerosol transmission) in enclosed areas