The Cabinet backed a 3rd runway at Heathrow on 5th June 2018. Parliament will now vote on the Airports National Policy Statement (NPS) – see link in full post plus link to Government response to Transport Select Committee Report on the NPS – which contains the plans for a third runway, within 21 days. If it supports the new runway, it becomes Government policy, though some local authorities are expected to challenge the decision in the courts.
DfT Summary of the NPS:
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/713661/proposed-expansion-of-heathrow-summary.pdf
Chris Grayling’s Statement to Parliament:
https://www.gov.uk/government/speeches/proposed-heathrow-expansion
On the same day, the Government published its detailed response to the Transport Select Committee’s report on the NPS: https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/713654/government-response-to-the-transport-committee-report-on-the-revised-draft-airports-nps-web-version.pdf
HACAN, along with Campaign for Better Transport, Friends of the Earth and Greenpeace, produced this short report arguing that the 3rd runway doesn’t meet Labour’s four tests: http://hacan.org.uk/wp-content/uploads/2018/06/Labours-four-tests-1.pdf