Question to the Department of Health and Social Care:

To ask Her Majesty's Government what assessment they have made of references to the replacement by some local authorities of sodium and mercury street lighting with LEDs contained in the Annual Report of the Chief Medical Officer 2017, published on 2 March 2018.

Public Health England has not carried out an assessment of the replacement by some local authorities of sodium and mercury street lighting with light-emitting diodes (LEDs) since the publication of the Annual Report of the Chief Medical Officer 2017, on 2 March 2018.

Public Health England carried out a study in 2016 for Human responses to lighting based on LED lighting solutions: Commissioned by the Chartered Institution of Building Services Engineers and the Society of Light and Lighting. A copy of the report is attached. This study included an assessment of LED streetlights.