18 Dec 2025
The expansion of London Luton Airport is flying ahead after the High Court rejected a legal challenge which argued development consent had been unlawfully granted – but what does that mean for local residents affected by the decision?
Campaign group Luton and District Association for the Control of Aircraft Noise (LADACAN) opposed the decision by Transport Secretary Heidi Alexander to approve the expansion despite planning inspectors saying the proposed benefits did not outweigh the environmental harm.
Airport owners Luton Rising submitted a Development Consent Order (DCO) in February 2023 because the proposal was considered to be of such a size and scale that it is deemed a Nationally Significant Infrastructure Project.
It will see capacity increase from 19 million passengers per year to 32 million by the mid-2040s, a move which the Government says will unlock £1.5bn in economic growth for the region.
Andrew Lambourne, spokesperson for LADACAN, said they were surprised and disappointed the hearing had gone against them: “We don’t think the judgment fully grappled with some of the key points we raised — particularly around how climate impacts should be assessed. These are complex and developing areas of law, and High Court judges are often cautious. The fact that the issues remain finely balanced is precisely why we are now carefully considering our next steps.”
But despite the result, he still considered the challenge to have been worthwhile: “Our grounds for Judicial Review raised important and unresolved questions about how emissions from major infrastructure projects are treated in planning decisions. Because we disagree with the outcome on key arguments put before the court, we’re considering whether we should appeal.
“The risk otherwise is that unclear or incomplete reasoning becomes normalised, and that would affect future decisions well beyond Luton.”
Looking ahead to the future, he said there were still a lot of challenges between now and Luton Airport reaching 32 million passengers: “First, a possible appeal. Second, they have to find a backer for a multi-billion pound project to expand a noisy and polluting industry when the costs of climate change are increasing and the Government will sooner or later have to wake up to its net zero commitments. Personally, this whole threat to our local quality of life has woken me up to the bigger threat to our planet from carbon emissions, so we may be looking to emphasise that as well as the harms caused by noise impacts.”
But he feared it would be impossible to mitigate the impacts of tens of thousands more road and rail users per day on the local transport infrastructure: “That’s 70 per cent more night flights on the health of those awoken by them, emissions from 77,000 more flights a year and the indirect non-CO2 effects from their contrails, or the devaluing of the Chilterns Area of Outstanding Natural Beauty.
“Those negative impacts are why the national Planning Inspectors recommended this expansion should not go ahead. I hope many more people decide to join LADACAN to help increase our firepower. Anyone concerned about these issues is urged to search ‘Crowd Justice Luton Airport’ online and visit our crowdfunding page.”
St Albans MP Daisy Cooper also responded to the ruling: “I oppose the expansion for a number of reasons. Firstly because of the carbon emissions, and I’m just so angry about this.
“The Government should have produced an emissions framework first to show how they were going to manage [carbon and other] emissions, and they haven’t, and that’s really frustrating.
“It they had said, well, obviously the expansion of Luton Airport is going to see emissions go up but we’re going to counter that by doing something else, then at least you can see a route towards them hitting climate targets.
“Secondly because of the noise pollution that comes with expansion for local residents here in St Albans, and thirdly, because the airport is not really terribly well connected and probably isn’t the best place to have an expansion.”
She has now written to the Government asking them to review the capacity of the Thameslink railway line, which is effectively back up to pre-pandemic levels in terms of passengers.
“We’re going to have a huge explosion in terms of number of new houses and people using the Thameslink line in the coming years, thanks to the Labour Government’s higher housing targets, and expansion at Luton Airport is going to have more people travelling in and out of London, and then there’s rail freight as well.
“All these additional pressures could mean that the Thameslink line is over capacity within a decade, and that’s not a lot of time when you’re talking about rail infrastructure, so I’m trying to raise that issue now with a view to making sure the Government does some longer term thinking and comes up with a plan to ensure St Albans commuters get a reliable service in the future.”
Colleague Victoria Collins, MP for Harpenden, agreed: “Even the climate change committee, who are the Government’s own independent advisors, have said that they needed to have a proper framework in place looking at climate emissions before considering any airport expansions.
“I still receive a steady stream of complaints about noise pollution, and that will only get worse as a lot of that capacity increase will be more frequent planes later at nigh and earlier in the morning, so a lot of people won’t feel the impacts until it’s too late.”
Jeff Phillips, chair of The Harpenden Society, which has been outspoken in its opposition to the expansion, said: “The Harpenden Society has been campaigning against the over expansion of Luton Airport for many years with formal objections and public meetings so we were shocked by the recent rejection of LADACAN’s Judicial Review, which we fully supported.
“Whilst the society believes that Luton Airport is a valuable local asset which brings employment to the area and convenience for travellers we stand 100 per cent with LADACAN against the planned expansion because of the noise and pollution impacts, and the stresses it will place on local roads and the rail service.”
Leader of SADC Conservatives Cllr Matt Cowley said: “The Government seems determined to push ahead with Luton Airport expansion. As local politicians, our job over the coming years will be to make sure that the impact of expansion has as limited an impact on local residents as possible.
“That’s going to require some strategic planning around Hertfordshire’s road network to ensure that Harpenden and the villages don’t end up as rat runs for a clogged up M1, it’s going to need some real action on our already appalling train service to ensure that the capacity is there to cope, and it is going to mean holding the Airport to account on its commitments on the environment and noise.
“Our Conservative team will continue to work to protect our residents.”
Former Conservative candidate for Harpenden and Berkhamstead in the General Election, Nigel Gardner, was outspoken against the expansion during his campaign.
He said: “This battle is not over. It is absolutely right to appeal the judgement.
“The Supreme Court has made crystal clear that big infrastructure projects must have proper environmental assessments. This has simply not happened in this case. The developers have used Mickey Mouse analysis, often without real numbers.
“If we let this go, and stop fighting, future generations will not understand our shortsightedness. Appeals are expensive. My plea is – open your wallets, donate to the wonderful people at LADACAN.”
