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Planning Process

We are committed to listening to our community, acting fairly, and helping local people and businesses have their say, so our neighbours can share in the economic benefits that expansion is estimated to generate. As part of the planning process we are holding comprehensive consultations, the first of which took place at the beginning of 2018.

Heathrow Airport Expansion Consultation

The Airport Expansion Consultation ran from 18th June until 13th September 2019 and gave the public an opportunity to provide feedback on Heathrow’s proposals for the future layout of the airport, including the new runway and other airport infrastructure such as terminals and road access.

Throughout the planning process we will continue to engage with our neighbours, airlines, partners, elected representatives and Government to make this a project that delivers for everyone.

Expansion will be authorised via a Development Consent Order (DCO), a special kind of consent which is required for nationally significant infrastructure projects like Heathrow. The DCO will contain most of the consents and powers that we need to build and operate the third runway such as powers for complusory acquistion of land and development. The DCO also sets out a range of consents for Heathrow expansion such as environmental consents and building consent.

The preparation of Heathrow’s DCO application is underway periods of public consultation and continuous engagement with neighbouring communities, local authorities, airlines, statutory bodies and the Heathrow Community Engagement Board (HCEB).

We expect to submit our DCO application to the Planning Inspectorate (PINS) in 2020.


Heathrow Consultations

Heathrow is consulting on our expansion proposals in two stages.

Heathrow Consultation 1

The first consultation sought views on our emerging proposals in terms of what the expanded airport could look like, how it might operate, and how we might best mitigate against the potential impacts, including proposals for compensation and noise insulation. This consultation ran from 17 January 2018 – 28 March 2018.

This Consultation is now closed and we have archived this consultation.For more information on our Consultations visit https://www.heathrowconsultation.com/

Airspace Future Operations Consultation (Jan 2019)

The Airspace and Future Operations consultation asked respondents to help shape the airport’s plans for its future airspace – both for the existing two runways and as part of the proposed expansion. The eight- week Airspace & Future Operations consultation ran from 8th January until 4th March and asked feedback on several key topics:

– Airspace change for an expanded Heathrow: the local factors we should consider in different geographic areas when designing future flight paths.

– Airspace change to make better use of our existing two runways: the local factors we should consider in different geographic areas when designing new flight paths for some aircraft arrivals on our existing two runways.

– Future operations for an expanded Heathrow: how we will operate our three runways in the future – this includes managing noise; respite through runway and airspace alternation; directional preference and night flights.

This Consultation is now closed and we have archived this consultation.For more information on our Consultations visit https://www.heathrowconsultation.com/

Airport Expansion Consultation (June 2019)

This Consultation will seek views on the proposed scheme for expansion and how Heathrow will manage and mitigate the effects of this growth on local communities.This consultations is statutory and Heathrow is required by Government to hold it to determine our preferred plan for expansion.

This Consultation is now closed and we have archived this consultation. For more information on our Consultations visihttps://aec.heathrowconsultation.com

Development Consent Order (DCO)

After the Airport Expansion Consultation closes in September 2019, Heathrow will submit a final proposal to the Planning Inspectorate as part of an application for a Development Consent Order (DCO) under the Planning Act 2008. The DCO application will include requests for a range of powers and authorisations, including powers for the compulsory acquisition of land.

The Planning Act 2008 establishes the consenting process for nationally significant infrastructure projects (NSIPs). NSIPs are projects considered to be so large and important that permission to build them must, by law, be given at a national level by a Secretary of State.

We will submit our application for development consent (our DCO application) to the Planning Inspectorate, and an independent examining authority will then be appointed to examine it on behalf of the Secretary of State. During the examination stage, anybody with an interest in the Project can participate and make representations in writing or orally at

Once the examination is complete, the examining authority will submit a report and recommendation on the application to the Secretary of State for Transport, who will then make a decision on whether or not to grant the DCO.


Construction on the main works (including the runway) will begin shortly after the DCO has been granted. It is possible that some early works will take place before then. Any early works will be subject to consultation and environmental assessment as required.

Expansion is a Nationally Significant Infrastructure Project and permission to build the runway will take granted via a Development Consent Order in accordance with the Planning Act 2008 The Planning Act was introduced specifically for projects of this scale and national importance.

Other such projects are Hinkley Point Nuclear Power Station and the Thames Tideway Tunnel.

For more information on the DCO application process, please visit the Planning Inspectorate’s website: https://infrastructure.planninginspectorate.gov.uk/