Heathrow: National Airports Review - 22nd October 2025

Here are the climate-related sections of speeches by MPs during the Commons debate Heathrow: National Airports Review.

Full text: https://hansard.parliament.uk/Commons/2025-10-22/debates/EFD26F58-2421-4C6F-8E15-AABDB2BE0D12/HeathrowNationalAirportsReview

12:45 Heidi Alexander (Labour)

The world has changed since the last ANPS review in 2018, which is when it was designated. New environmental and climate obligations have been introduced, and patterns of travel have changed. However, pretty much every UK airport saw its busiest summer on record. We could put our head in the sand and pretend this is not the case, but we would be doing a disservice to our economy and to the next generation. That is why, in carrying out this review, we will consider how any proposed scheme must meet four clear tests: that it contributes to economic growth across the country; that it meets our air quality obligations; that it is consistent with our noise commitments; and, crucially, that it aligns with our legal obligations on climate change, including net zero.

We will seek the independent opinion of the Climate Change Committee, which I will write to shortly to request this advice. While a third runway at Heathrow has been factored into carbon budget 6, it is right that we update our modelling and seek the views of the CCC. Given Heathrow’s national importance, we will also consider naming the airport as critical national priority infrastructure, in line with our approach to low-carbon energy projects. We are further considering whether to name a statutory undertaker as an appropriate person to carry out the project under the Planning Act 2008, providing additional clarity to stakeholders and the local community. It is clear that this is a large and complex programme that requires a thorough and evidence-led approach. Over the coming months, my Department will develop analysis on economic and environmental impacts of expansion. We will also undertake an appraisal of sustainability, as required by statute, alongside a habitats regulations assessment and other necessary technical work. If amendments are needed to the ANPS as a result of the review, we expect to consult on an amended policy statement by next summer. Communities will be able to have their say and we will shortly publish an updated stakeholder engagement approach to ensure transparency and fairness throughout the process.

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12:48 Richard Holden (Conservative)

I understand that the Chancellor has claimed a third runway will be operational by 2035—something the Secretary of State has reflected today—and that she wants to see spades in the ground during this Parliament. Of course, we welcome the reforms that will enable this to happen. Those reforms will not have any teeth, however, unless the Government commit to backing our plan to scrap the Climate Change Act 2008. Otherwise, Heathrow expansion will face judicial review after judicial review, bogging down the process, driving up costs and delivering further delay. Even Labour’s Mayor of London has said that he “wouldn’t hesitate” to launch legal challenges against a third runway. Can the Secretary of State commit to ensuring that her own Labour colleagues—including those she worked for previously—and allies will not be the ones who prevent this important project from ever seeing the light of day? Can the Secretary of State also commit to ensuring that the associated road and rail links not just into London but to the south are included, so that the expansion delivers genuine economic growth and connectivity for the whole of the United Kingdom?

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12:53 Heidi Alexander (Labour)

The right hon. Gentleman also asked about climate change, service access and our reforms to judicial reviews. On service access, I can be clear with him that we expect this project and associated infrastructure improvements to be privately financed. Through the ANPS review, we will be looking holistically at public transport requirements, be that southern rail access, western rail access or how people get to and from central London. He will recall that, in the spending review, we set out the biggest investment in London’s transport for over 10 years, with £2.2 billion enabling Transport for London to buy new rolling stock on the Piccadilly line and 10 extra Elizabeth line trains. We will work closely with our colleague, the Mayor of London, and TfL to ensure that appropriate infrastructure is in place.

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12:57 Ruth Cadbury (Labour)

I thank the Secretary of State for her statement. I look forward to the work she does on this ANPS coming to our Committee in due course. A third runway at Heathrow, combined with all the other agreed—or likely to be agreed—expansions of capacity in London and south-east airports would involve an increase of 177 million passengers, which would be 70% more than the number of passengers in London and the south-east from 2024. I look forward to the Climate Change Committee’s response to the proposal, because it has said that a 35% increase in capacity would be the maximum that would keep the UK compliant with our international legal commitments.

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Heidi Alexander (Labour)

My hon. Friend is entirely right to raise these issues. We will give very careful and thorough consideration to them in the airports national policy statement review, which will take place in the coming months. She referred to the Climate Change Committee’s opinion on capacity expansion. We are making rapid progress in cleaning up the fuel that is used in planes, and we are making huge efforts to reform our airspace, so that we can have cleaner and more direct flights. The carbon intensity of flying has to come down if we are to have more planes in the air. She was also right to highlight the importance of the regulatory model. That is why we have asked the Civil Aviation Authority to do this piece of work over the coming months; it is aligned with the review in the airports national policy statement. We will say more on that in due course.

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Olly Glover (Liberal Democrat)

It is welcome that the Secretary of State has made her support for Heathrow expansion subject to four tests, but I detect perhaps a slight hint of cognitive dissonance, and a contradiction in the Government setting out timelines for delivering something that they say is subject to four tests. The Secretary of State said that she would hear the independent advice of the Climate Change Committee. If the CCC decides that the preferred option for the Heathrow third runway is incompatible with our carbon emissions and our net zero targets, will she drop her support for the third runway?

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Heidi Alexander (Labour)

I start by congratulating the hon. Gentleman on his appointment. He referred to New Economics Foundation research. I should be clear with him that the Government are absolutely committed to reaching net zero for the whole economy by 2050, and that we will meet our climate change obligations as set out in the Climate Change Act 2008. We have also been clear repeatedly that any airport expansion proposals will need to demonstrate that they will contribute to economic growth and can be delivered in line with the UK’s legally binding climate change commitment. We will engage with the CCC in the ANPS review.

Heathrow is only one part of the process; the expansion of Heathrow, Luton, Gatwick and Bristol airports was factored into carbon budget 7, and the hon. Gentleman will know that the Government will publish our updated delivery plan for carbon budgets 4 to 6 in the coming weeks. We should not see economic growth and our climate change commitments as being inconsistent with each another. I believe we can go further, faster, on cleaner fuels and technological developments, but people want to fly, and I do not think that this Government should get on the wrong side of public aspiration.

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John McDonnell (Labour)

I first of all express my sympathy for the Secretary of State: she knows from past experience that this is like watching a car crash in action, and it has been thrust upon her by the Chancellor. She knows that Heathrow has made the clear commitment that it will not pay for the infrastructure; that landing charges will go up, and passengers will pay for it; and that there is no way that we can meet our climate change targets if the expansion goes ahead. That is why I express my sympathy; she has been given an impossible task.

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13:09 Munira Wilson (Liberal Democrat)

The Chancellor has staked her economic credibility and growth strategy on a third runway at Heathrow. The Secretary of State said that she is committed to seeing flights take off from it in 2035, yet at the same time, she talks about taking an evidence-led approach, putting this project to her four tests, taking the advice of the Climate Change Committee and doing a thorough economic and environmental impact assessment. Could she clarify a point for the House, because I fear my hon. Friend the Member for Didcot and Wantage (Olly Glover) did not get a straight answer? If the evidence shows that the environmental costs are too great and the economic benefits are too little, will she and, crucially, her Chancellor be prepared to do a U-turn and can this whole project?

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13:22 Toby Perkins (Labour)

The Environmental Audit Committee has just completed its very detailed work on aviation expansion, which we will announce soon. One thing that came across was that the Climate Change Committee was advising demand management as one of the ways that it should be delivered, consistent with our environmental commitments. I am glad that the Secretary of State has reaffirmed that the expansion will have to be consistent with those commitments, but can she tell us whether demand management will be part of that? What assessment has she made of the aspects that will require Government policy rather than being within Heathrow’s gift, such as the expansion of sustainable aviation fuel? Finally, I am glad to hear that she recognises that this is a 21st-century plan with 20th-century road links and 19th-century rail links, so can she tell us more about how she will reduce the overall carbon emissions contribution that Heathrow makes?

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13:22 Heidi Alexander (Labour)

There were probably three questions in one there. I say to my hon. Friend that I am not prepared to stand in the way of the public’s aspiration to fly. We are not looking at demand management at the moment; our approach to aviation decarbonisation is based on the analysis suggesting that the sector can make a significant contribution to our economy-wide net zero target by 2050 by focusing on new fuels and new technologies.

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13:30 Sammy Wilson (DUP)

While most of the comments today have been critical, regions across the United Kingdom need a strong hub airport, and Heathrow provides that. I seek assurances from the Secretary of State that slots at any expanded airport will be ensured for flights from regional airports. But I also warn her: given the way climate change targets have been used to stop major infrastructure projects in Northern Ireland, such as major roads, is she confident that, by sticking by the Climate Change Act 2008, we are not giving a weapon to those who are opposed to this project and will use the courts to ensure that it is stopped?

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13:30 Scott Arthur (Labour)

I thank the Secretary of State for her statement, her leadership, her focus on growth and her commitment to fit this project within the Paris agreement. I welcome the four tests that it will be judged against, but I have a suggestion for a fifth test—people might not be surprised to hear that it focuses very much on my constituency. In recent years, Edinburgh South West has benefited from fantastic rail connections between Edinburgh and London, and from fantastic direct international flights from Edinburgh airport to overseas. Does she agree that if this project goes ahead, it cannot be to the detriment of places such as Edinburgh?

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