London Gatwick is moving its Northern Runway Programme into detailed design and delivery after legal challenges to the expansion were concluded, alongside a separate £1.9bn programme of investment in the existing airport.
The development gives London Gatwick greater certainty over its long-term capacity plans as revenue and operating earnings continue to rise despite lower passenger numbers during the first half.
Revenue increased 4.8% to £515.2m, while EBITDA rose 5.5% to £276.5m. Passenger numbers fell 4.7% to 19.1m as Middle East disruption and capacity changes at some low-cost carriers affected traffic.
Seven airlines joined Gatwick during the half year, including Jet2, Air France, Condor, and Eurowings. The airport now serves more than 60 airlines and 231 destinations.
The Northern Runway Programme is the larger strategic project. Government approval was granted in September 2025, and the Court of Appeal rejected legal challenges in August, bringing an eight-year planning and legal process to a close.
The programme would bring Gatwick’s existing Northern Runway into routine use alongside the main runway. The airport estimates that expansion could support 14,000 jobs and add around £1bn to the economy each year.
Chief executive Pierre-Hugues Schmit said the conclusion of the legal process allowed Gatwick to turn its focus “from planning to detailed design work and delivery”.
The expansion sits alongside £1.9bn of investment in the current airport. A £140m western extension to Pier 6 is scheduled for completion in early 2027, while other projects are aimed at increasing operational efficiency and passenger capacity.
Gatwick is also investing in technology. Smart Stand systems developed with easyJet and DHL use artificial intelligence to improve aircraft turnaround activity, while robotic parking has been introduced as the airport seeks to extract more capacity from its existing footprint.
Airport economics increasingly depend on that combination of physical and operational investment. Building terminals and runways can take years, so operators also need to improve the number of passengers and aircraft movements that existing infrastructure can process reliably.
The first-half figures illustrate the balance. Gatwick generated higher revenue and EBITDA despite carrying fewer passengers, while continuing to make capital commitments based on expectations of stronger long-term demand.
Large aviation projects remain exposed to unusually long development cycles. Planning, environmental assessment, legal challenge, procurement, financing, and construction can all take place years before the additional capacity begins producing revenue.
That creates policy risk for infrastructure investors. Changes in business rates, aviation regulation, carbon policy, planning rules, and financing conditions can alter returns after substantial capital has already been committed.
Schmit has called for a stable and proportionate investment environment, including on business rates, as Gatwick and its shareholders prepare for the next stage of development.
The ownership structure gives the programme an international capital dimension. VINCI Airports owns 50.01% of Gatwick, while Global Infrastructure Partners, part of BlackRock, manages the remaining 49.99%.
Decarbonisation remains another constraint on expansion. Additional airport capacity can support tourism, trade, and inward investment, but operators face pressure to show how growth fits within national carbon objectives.
Gatwick has set a target of net zero for its own scope 1 and 2 emissions by 2030. Those operational emissions are distinct from the much larger carbon footprint of aircraft using the airport, leaving aviation-sector technology, sustainable fuels, and wider transport policy important to longer-term expansion.
Resilience and passenger performance will also influence the value of the investment. Gatwick said 95% of passengers passed through security within five minutes during the first half and that the airport met 99% of agreed passenger-service measures.
The end of the Northern Runway legal process shifts the programme into a different category of risk. Planning uncertainty gives way to detailed engineering, procurement, financing, construction sequencing, and integration with an airport that must remain fully operational throughout the work.
For Gatwick, the runway expansion and £1.9bn existing capital plan now form a single long-term investment cycle aimed at increasing both physical capacity and the productivity of the infrastructure already in use.
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