The UK aviation sector faces a potential shake-up after the Competition and Markets Authority endorsed a proposal for an alternative hub to challenge Heathrow’s dominance. In a report published on Tuesday, the watchdog argued that encouraging competition among airports could drive down costs and improve connectivity, signalling a shift in long-standing policy that has prioritised expansion at Heathrow.
The recommendation comes amid a deadlock over Heathrow’s third runway, a project mired in legal challenges and environmental opposition for over a decade. The CMA’s intervention suggests that expanding Gatwick or Stansted, or even building a new hub in the Thames Estuary, might offer a more viable path to increasing capacity. The authority stressed that any development must meet strict carbon reduction targets, aligning with the government’s net-zero emissions goal by 2050.
Industry analysts have welcomed the move but cautioned that significant investment and regulatory reforms would be needed. A spokesperson for the Airports Operators Association said this could “unlock billions in private capital” and create thousands of jobs. However, environmental groups warned that additional runway capacity would increase flights and pollution, undermining climate pledges.
The government has yet to respond formally, but transport department sources indicated the CMA’s analysis would be considered in the upcoming aviation strategy review. The development marks a notable departure from decades of policymaking centred on Heathrow as the primary gateway for global trade and tourism.
