The Special Standing Committee on Heathrow met on Thursday 5 February 2026 to discuss the latest proposals for Heathrow Airport's expansion. The committee noted Richmond Council's continued opposition to any expansion that would increase flight movements and disruption to residents, and also discussed the ongoing Airspace Modernisation Programme and the potential introduction of easterly alternations.

Heathrow Airport Expansion Plans

The committee received an update on Heathrow Airport Ltd's (HAL) proposals for expansion, which include the construction of a new third runway and terminal complex, at an estimated cost of £49 billion. These plans aim to increase the airport's capacity to 756,000 flights per year and 150 million passengers annually. Richmond Council reiterated its strong opposition to any expansion, particularly the adoption of mixed-mode operations, which would end alternating runway use and remove periods of respite for residents.

The government has launched a review of the existing Airport National Policy Statement (ANPS), with a consultation on a draft revised ANPS expected in Summer 2026. The committee noted that the Planning and Infrastructure Act 2026 has introduced measures to speed up the consenting process for major infrastructure projects, potentially reducing the time for expansion approval by up to three years.

The government's decision on expansion will be based on four tests: contribution to economic growth, meeting air quality obligations, consistency with noise commitments, and alignment with climate change obligations. However, the metrics for assessing these tests have not been clearly defined. Concerns were raised about the economic growth claims, with previous analysis suggesting a net negative economic benefit when environmental and social costs are included. Similarly, doubts were cast on the argument for regional growth, with potential negative impacts on regional airports.

Regarding noise commitments, HAL claims expansion would be delivered while limiting noise, but it is estimated that over 300,000 people could be affected by noise from an expanded Heathrow, with potential impacts on areas like Richmond Park. The committee noted that the judicial review of Gatwick Airport's expansion approval, partly on noise grounds, is being monitored for implications for Heathrow.

On air quality and climate change, HAL suggests expansion can be achieved while meeting carbon commitments through Sustainable Aviation Fuels (SAF). However, concerns exist about the viability and production levels of SAF, and the significant increase in carbon emissions and pollution from passenger and cargo ground traffic. The committee also noted that the government's factoring of the third runway into the UK's 6th Carbon Budget may not account for the combined impact of other airport expansions.

HAL has begun work on its Development Consent Order (DCO) application, with a public consultation on the DCO expected in September-October 2026. Richmond Council, as a 'host authority' for some works, is engaging with HAL on planning matters, particularly concerning waterways in the borough. The council is considering whether to tender for consultants or join forces with other authorities under the umbrella of the Heathrow Strategic Planning Group (HSPG).

Airspace Modernisation Programme

The committee discussed the ongoing process of modernising airspace around Heathrow. The government has established the UK Airspace Design Service (UKADS) as a national body to oversee all airspace modernisation, with a stated priority of delivering modernised London airspace by 2035, essential for accommodating a third runway. Concerns were raised that this national approach may reduce local stakeholder involvement. The Civil Aviation Authority's consultation on streamlining the CAP1616 airspace change process was also noted, with Richmond Council opposing measures that reduce community consultation requirements.

Easterly Alternations

Heathrow Airport Ltd has submitted a planning application to Hillingdon Council for ground infrastructure works to introduce easterly alternation. This would allow planes to land on the northern runway and depart from the southern runway during easterly operations, similar to the current practice during westerly operations. While this aims to provide predictable respite for communities, it may also lead to new areas being overflown. Hillingdon Council approved the application in December 2025, and HAL is negotiating a Section 106 agreement. The works are expected to take up to 18 months to complete, with an estimated completion in 2029. However, there is a possibility of delays if HAL decides to integrate these works with its wider expansion plans.

The committee also noted that Richmond upon Thames Council has a longstanding policy of opposing Heathrow expansion and campaigning for a reduction in night flights, which is reflected in the 2022-2026 Richmond Corporate Plan. The council will continue to challenge Heathrow and advocate for its residents.

The committee agreed to meet more frequently to discuss these matters, with future meetings to be scheduled around consultation periods.