Emirates boss urges UK to consider renationalising Heathrow to unlock third runway

Emirates president Sir Tim Clark has urged the UK government to consider renationalising Heathrow, arguing that the airport’s ownership structure is now the main obstacle to building a third runway.

Clark’s intervention, reported by the Financial Times on June 13, is the latest challenge to Heathrow’s long-delayed expansion plan. He said ministers may need to force airlines and investors to reach agreement if the project is ever to move forward.

The call lands amid renewed scrutiny of how Heathrow’s expansion would be funded, regulated and delivered. The airport is privately owned by institutional investors, but it remains one of the UK’s most politically sensitive infrastructure projects because of its scale, cost and impact on airlines and passengers.

Why Clark is pushing for renationalisation

Clark’s argument is not simply that Heathrow needs more money. It is that the current private ownership model is slowing the project and making it harder to reach a workable deal.

In his view, the state may need to step in if the airport, airlines and investors cannot bridge their differences. That is a significant escalation in a debate that has already moved well beyond planning permission and into the question of who should control the expansion.

The comments are notable because they come from the president of Emirates, one of the world’s largest long-haul carriers and a major user of Heathrow. Clark is not arguing from the perspective of a rival airport or a political campaign; he is saying the ownership structure itself is getting in the way of delivery.

His remarks also sharpen the divide between those who believe Heathrow’s expansion can be delivered through private capital and those who argue the airport’s current model is now part of the problem.

The regulatory fight over how to build it

Clark’s intervention comes as the UK Civil Aviation Authority is separately trying to reshape how Heathrow’s third runway could be delivered.

In May, the regulator floated proposals that could allow rival firms to bid to design, build and operate parts of Heathrow’s expansion, including the runway and a new terminal. The most radical version of that approach would allow third parties to build and operate terminals, subject to government approval.

That approach matters because it would weaken Heathrow’s control over the project and introduce competition into an expansion that the airport has traditionally wanted to manage itself.

The CAA’s moves suggest it is trying to push down the cost of expansion and reduce the risk that airlines and passengers are left covering a more expensive private-finance model.

Pressure on Heathrow’s financing model

The ownership debate is being intensified by the regulator’s stance on charges.

On March 31, the CAA rejected Heathrow’s proposal for a 17% rise in landing fees and instead backed a much smaller increase. That decision underlined how reluctant the regulator is to let the airport pass large costs on to airlines.

The landing-fee dispute is central to the wider argument about the third runway because financing is not separate from delivery. Heathrow needs a model that investors will back, but airlines are resisting a structure that would raise operating costs and potentially feed through to passenger fares.

That tension has made the expansion dispute as much about economic regulation as about construction. The airport wants a return that can support investment, while the CAA is trying to make sure the project does not become too expensive for users.

A long-running and politically charged project

Heathrow’s third runway has been discussed for years, but the scheme has repeatedly run into political, legal, financial and environmental obstacles.

The airport is one of the UK’s biggest pieces of infrastructure and the main hub for London, which makes any change to its ownership or expansion model politically sensitive. Whoever controls the project will also shape airport charges, airline costs and, potentially, passenger fares.

That is why the latest intervention from Clark matters beyond the immediate headlines. It places ownership at the center of the debate rather than treating it as a secondary issue.

It also underlines how the project has evolved from a simple capacity question into a broader argument about the right way to finance and regulate major infrastructure in the UK.

What Heathrow and investors say

Heathrow and its backers have argued that the private model can still deliver expansion efficiently without taxpayer funding.

The airport’s investor base includes institutional owners, and it has continued to defend the case for private finance even as the regulator pushes for a tougher settlement. Heathrow says it can work with government and regulators to move the project forward.

That position is directly challenged by Clark’s suggestion that the current setup is too slow and too fragmented to unlock the runway. The dispute now extends beyond whether Heathrow should expand to how much control it should retain if it does.

The CAA’s proposals and the landing-fee ruling have made that question more urgent by showing that the regulator is prepared to intervene more aggressively in the economics of the project.

What happens next

For now, Clark’s call is a pressure tactic rather than a government decision. There is no indication that ministers have committed to renationalising Heathrow, and the idea remains a proposal rather than policy.

The immediate next step is likely to be further government and regulatory discussion of the CAA’s proposals. Heathrow and rival bidders may also sharpen their positions on who should design, build and operate parts of the expansion.

Airlines are expected to keep pressing for lower charges and a lower-cost delivery model. Heathrow, meanwhile, is likely to continue defending its private ownership structure and its role in financing the project.

The outcome will matter not just for the third runway, but for how the UK handles other large infrastructure projects where private capital, regulation and state intervention collide.