Populus interviewed at least 833 adult residents (18+) in 15 constituencies local to Heathrow Airport by telephone between 5 July 2018 and 3 September 2018. In total, 12,513 residents were interviewed. Results were weighted to be demographically representatives of all adults in each constituency, and were also weighted by 2017 General Election vote to be politically representative of all adults.
5 July, 2018
3 September, 2018