The plan aims to enable departures of narrow-bodied aircraft, such as Airbus A320s and Boeing 737s, with first flights from the new runway targeted for around 2030, positioning the project as a major economic and capacity boost.

The High Court previously ruled in June that the transport secretary's decision did not breach carbon reduction targets, an outcome maintained on appeal.

Specifically, campaigners contended that the climate, noise, and air-pollution effects of the expansion warranted fuller assessment, despite the ruling in favor of the project.

Gatwick's chief executive described the decision as the end of an eight-year planning cycle, moving the project into design and delivery phases and calling it shovel-ready with an anticipated one billion-pound annual boost to the economy.

Cagne and Barclay's grounds on climate assessment were deemed unarguable by the Court of Appeal, which upheld Justice Mould's June ruling.

Transport Secretary describes the decision as a major milestone, signaling thousands of jobs and increased UK investment, with over 219 million pounds allocated for green fuel production to cut aviation emissions.

Campaigners from Cagne and Peter Barclay argued that climate impacts were not properly assessed; their bids to overturn the decision were dismissed as unarguable.

Gatwick Airport's 2.2 billion second runway expansion has been approved to proceed after the Court of Appeal upheld a High Court ruling, moving the emergency runway 12 metres north to accommodate about 100,000 more flights per year.

The Court of Appeal found there were no real prospects of success in the appeals and said Justice Mould's ruling was thorough, with campaigners promising continued scrutiny on environmental and community concerns.

The Court of Appeal upheld the High Court ruling, effectively ending an eight-year legal battle and allowing the project to move forward despite challenges from campaign groups.

The High Court had previously dismissed challenges in June, finding no logical or contradictory basis to deny the development on carbon-target grounds and rejecting claims that proximity to Heathrow affected necessity.

Reaction from Cagne remained critical, with vows to continue holding Gatwick to account and questioning the balance between expansion, costs for local authorities, and environmental impacts.