London-Gatwick Airport announced on August 4, 2026, that the UK Court of Appeal has rejected legal challenges against the planning permission granted for its Northern Runway Project. The legal decision upholds the planning approval originally issued by the UK Secretary of State for Transport in September 2025, allowing airport management to proceed with its multi-billion-pound expansion plans.
The Court of Appeal ruling follows a prior judgment by the High Court on June 23, 2026, which upheld the government's approval of the runway project. Following that ruling, environmental and local campaign groups launched an appeal. The legal challenge was brought by Peter Barclay, Chair of the Gatwick Area Conservation Campaign, alongside Communities Against Gatwick Noise Emissions (CAGNE).
Under the technical details of the development plan, Gatwick Airport intends to shift its existing standby runway by 12 meters. This repositioning will enable the facility to operate a second fully functioning runway alongside its primary runway, significantly increasing airfield capacity and operational flexibility.
Gatwick Airport estimates that the $2.9 billion (£2.2 billion) expansion project will generate substantial economic benefits for the United Kingdom. According to airport projections, the project will create approximately 14,000 new jobs and deliver an estimated $1.3 billion (£1 billion) annual boost to the national economy through increased business, trade, and tourism.
UK Transport Secretary Heidi Alexander described the court ruling as a major milestone for both Gatwick Airport and local communities. Alexander noted that the expansion is expected to accommodate around 13 million additional passengers and 100,000 more flights per year, strengthening international air connectivity. CAGNE expressed deep disappointment over the decision and stated it will continue monitoring secondary environmental issues such as airspace changes and noise.
