Research and analysis

Draft Heathrow Expansion National Policy Statement Appraisal of Sustainability

Appraisal of potential social, economic and environmental impacts of the policy set out in the draft Heathrow Expansion National Policy Statement (HENPS).

• From: Department for Transport
• Published: 18 June 2026

Documents

Appraisal of Sustainability (AoS) for the draft Heathrow Expansion National Policy Statement non-technical statement

PDF, 177 KB, 11 pages

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Appraisal of Sustainability (AoS) for the draft Heathrow Expansion National Policy Statement

PDF, 1.21 MB, 174 pages

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Appraisal of Sustainability (AoS) for the draft Heathrow Expansion National Policy Statement scoping report

PDF, 8.69 MB, 94 pages

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Appraisal of Sustainability (AoS) for the draft Heathrow Expansion National Policy Statement scoping report technical annex

PDF, 1.82 MB, 176 pages

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Draft Heathrow Expansion National Policy Statement Appraisal of Sustainability (AoS) noise annex

PDF, 1.64 MB, 46 pages

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Air quality support for review of ANPS: review of airside emissions

PDF, 750 KB, 32 pages

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Air quality support for review of ANPS: review of emissions source data and trends (NO2, NOX, PM10 and ammonia)

PDF, 621 KB, 22 pages

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Air quality support for review of ANPS: review of the PM2.5 concentration target and PM2.5 exposure reduction target

PDF, 976 KB, 30 pages

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Air quality support for review of ANPS: ultra-fine particulates literature review

PDF, 440 KB, 18 pages

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Details

The Appraisal of Sustainability (AoS) systematically identifies, describes and evaluates the likely significant social, environmental and economic effects of the draft Heathrow Expansion National Policy Statement (HENPS). It also analyses the reasonable alternatives to the Northwest Runway scheme.

The AoS informs policy preparation by ensuring that sustainability considerations are considered and clearly presented to decision-makers and consultees.

The AoS forms part of a wider suite of technical assessments undertaken to inform the draft HENPS, alongside the:

• Equality Impact Assessment (EqIA)
• Habitats Regulations Assessment (HRA)
• Health Impact Analysis (HIAn)

The Department for Transport (DfT) commissioned AECOM to prepare the AoS.

Published 18 June 2026