Question to the Department for Transport:

To ask the Secretary of State for Transport, by what proportion, compared to current figures, will carbon emissions from aviation at Heathrow change following the completion of a third runway.

The ‘UK aviation forecasts 2017’ provides a forecast of UK air passenger demand and aviation carbon dioxide emissions to 2050. This analysis includes aviation emissions at Heathrow Airport in 2016 and a forecast of emissions, including the Heathrow Northwest Runway scheme, across a range of years. The data you have requested can be found in Tables 69 and 70 of the ‘UK aviation forecasts 2017 data’ spreadsheet, accessible via this link: https://www.gov.uk/government/publications/uk-aviation-forecasts-2017