2026
October – November 2026: Heathrow West Limited – consultation on its Environmental Impact Assessment Scoping Report
October – December 2026: Heathrow Airport Limited – pre-application community engagement
2027
May – June 2027: Heathrow West Limited – pre-application community engagement
November – December 2027: Heathrow Airport Limited – submission of DCO application
November – December 2027: Heathrow Airport Limited – submission of DCO app