Research and analysis

Draft Heathrow Expansion National Policy Statement appraisal report

Reviewing the impacts of new airport capacity at Heathrow using updated passenger demand forecasts, an updated appraisal of Heathrow expansion delivered through a Northwest Runway and modelling of wider economic impacts.

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

Documents

Heathrow expansion appraisal report (HEAR)

PDF, 766 KB, 75 pages

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Heathrow expansion appraisal report aviation forecast data tables

ODS, 567 KB

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Heathrow expansion appraisal report aviation forecast data tables (disaggregated)

ODS, 83.2 MB

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Details

The Department for Transport (DfT) has produced this report to inform the government’s review of the Airports National Policy Statement (ANPS) and the Draft Heathrow Expansion National Policy Statement (HENPS), which provides the policy framework for decisions on nationally significant airport infrastructure.

The Heathrow expansion appraisal report (HEAR) presents an updated appraisal of the proposed expansion of Heathrow Airport through the delivery of a Northwest Runway.

The appraisal includes cost benefit analysis, and updates and consolidates the economic, connectivity and environmental analysis.

It draws on DfT’s latest aviation demand forecasts, revised appraisal methodologies and updated evidence on costs and impacts.

The appraisal replaces and supersedes the corresponding appraisal evidence that supported the 2018 designation of the ANPS.

The HEAR data tables provide forecasts of passenger numbers, aircraft movements and CO2 emissions by airport, with and without an additional runway at Heathrow.

See the 2026 UK aviation forecast report and data tables for further detailed information about the aviation forecasts supporting the HEAR.

Published 18 June 2026