Airport expansion and climate and nature targets

Status / emerging findings

• Government unable to provide evidence supporting its core assertion that airport expansion delivers economic growth; DFT's own analysis (obtained via FOI) showed Heathrow expansion would displace 27,000 aviation jobs from regions to London, contradicting 'balanced growth' claims
• Aviation emissions stuck at 2019 levels with no declining trajectory despite efficiency gains, and expansion plans would deliver 506 million annual passengers by 2050—exceeding Climate Change Committee's 402 million ceiling
• Sustainable aviation fuel currently 0.3% of global aviation fuel; UK has 9% of fuel needed for 2030 targets, requiring 10-fold scaling in 4.5 years—timeline widely regarded as unachievable
• Current Airports National Policy Statement (2018) creates 'policy vacuum' on local environmental impacts; permits legal compliance rather than harm mitigation, leaving 500,000 people in Heathrow's noise zone without air quality neutrality standards applied elsewhere in London
• Local authorities including Hillingdon Council systematically excluded from early consultation despite hosting 10,000+ affected residents and facing displacement of ~2,000 people; DCO process relies on subjective political judgment rather than binding environmental criteria

Why it matters

Airport expansion is central to government growth strategy, but the inquiry found the economic case unproven, emissions pathways uncertain, and local communities potentially bearing harms that planning law doesn't adequately prevent—forcing a collision between climate/nature commitments and stated economic priorities.

Tone arc

Inquiry opened with balanced examination of trade-offs (May 2025), shifted markedly adversarial by June 2025 after economic witnesses challenged government modelling as obsolete, hardened further in July 2025 when planning and local government testimony revealed structural gaps in environmental protections and community engagement. October 2025 report was critical; January 2026 government response attempted to reframe expansion as compatible with net zero but offered limited substantive concessions.

Key witnesses

Dr Alex Chapman, New Economics Foundation, Dr Stuart Jenkins, University of Oxford (net zero aviation), Celeste Hicks, Green Alliance, Ian Thynne, Hillingdon Council, Peta Donkin, National Infrastructure Planning Association, Dr Pauleen Lane CBE, Planning Inspectorate, Johann Beckford, Aviation Environment Federation, Professor Rob Miller, Cambridge University