Heathrow Third Runway Consultation Opens – Major Construction Opportunity Takes Shape

The government has opened a formal public consultation on the planning framework for Heathrow Airport’s third runway, marking a pivotal moment for the UK construction and infrastructure supply chain.

Published in June 2026 by the Department for Transport, the consultation runs for over 10 weeks until 1 September 2026, and sets out the key tests any development scheme must meet before a final planning decision is made in 2029. The scheme has been proposed by Heathrow Airport Limited (HAL), confirmed as the government’s selected developer in November.

The project carries significant weight for the construction sector. Expansion at Heathrow is projected to deliver up to £42 billion in economic benefits to the UK, with the government targeting up to 40% of growth benefits reaching areas outside London and the South East. Over 60,000 new local jobs are anticipated once the runway is operational, spanning a diverse range of sectors including baggage handling, logistics, and wider aviation services – alongside the construction workforce required to deliver the project itself.

For supply chain businesses, the consultation sets out four non-negotiable pillars that any scheme must satisfy: a clear strategy for job creation and economic benefit realisation; compatibility with the UK’s legally binding net zero targets; compliance with legal air quality limits; and no worsening of noise emissions for local residents. These criteria will form the basis against which all planning proposals from developers are assessed.

Transport Secretary Heidi Alexander confirmed the government’s intent to move “quickly and responsibly,” with the consultation completing 3 years faster than the equivalent process that produced the 2018 National Policy Statement. The independent Climate Change Committee has been formally engaged to advise on alignment with the UK’s net zero framework, while broader airspace modernisation work continues in parallel to reduce emissions and improve operational efficiency.

The consultation represents a formal opportunity for construction businesses, infrastructure specialists, and supply chain operators to engage with the decision-making process at an early stage – well ahead of the 2029 planning determination.

Capability areas relevant to this project include: civil engineering and earthworks, airfield and runway construction, terminal and passenger infrastructure, utilities and MEP, noise and environmental mitigation, transport and logistics infrastructure, and net zero and sustainability solutions.