Select committee: Environmental Audit Committee
Recommendation 23
5th Report - Airport expansion and climate and nature targets
Published 24 Oct 2025
Environmental Audit Committee Airport expansion and climate and nature targets All items in this report Report on parliament.uk ↗ Inquiry on parliament.uk ↗
Recommendation (the committee's words)
If the Government proceeds with airport expansion it should set out to the Committee in its response to this report, in-depth analysis on: • How it will ensure carbon costs will reach the level the Government expected in the Jet Zero Strategy. It should also set out a realistic timeline and a plan in the event that these targets become unachievable; 46 • The emissions savings it considers can be delivered by the aviation sector through technological development such as Sustainable Aviation Fuel, including the most recent risk register for these innovations; • The penalties, such as fines, the Government will impose on the aviation sector if it fails to meet the Jet Zero Strategy targets; • The level of emissions targets it will set for the sector in relation to international flights and how it will monitor and enforce those targets; and, • What environmental mitigations will be put in place if the sector fails to decarbonise. (Recommendation, Paragraph 110)
From: Environmental Audit Committee, 5th Report - Airport expansion and climate and nature targets (HC 831), 24 October 2025
Government response
The government responded to the whole report on 12 January 2026 (deadline 24 December 2025).
Summary written by Accountability Index from the government's response. It is not the government's own words.The Government's response largely points to its ongoing review of the Airports National Policy Statement (ANPS), with any proposed amendments to be consulted on in summer 2026, while setting out its existing carbon pricing and sustainable aviation fuel measures.
- On economic analysis, the Department for Transport (DfT) will develop updated analysis of the economic impacts of Heathrow expansion, with outputs published alongside any ANPS amendments for consultation "by summer 2026".
- On air quality and noise, the Government says mitigations "will be determined as part of the review process", with any amendments to the existing ANPS subject to consultation in summer 2026.
- On including international aviation emissions in carbon budgets, the Government says that, "subject to the allowances of parliamentary time", it "intends to lay the relevant legislation by summer 2026".
- On the Committee's request for a six-month contrail consultation and accounting for non-CO2 effects, the Government points to significant uncertainty about non-CO2 impacts and its research programme, with contrail findings to be published "in due course".