Construction Enquirer
Aaron Morby
01 August 2025
Heathrow has submitted its plan to deliver a third runway and invest £49bn into a vast transformation of the UK’s biggest airport.
The airport’s detailed blueprint, published today, sets out how the money will be spent over multiple decades, with £21bn earmarked for the new 3,500m runway and airfield infrastructure, forming the first phase of delivery.
Alongside the £21bn runway build, Heathrow plans to spend in the longer term
£12bn for new terminal and stand capacity
- Construction of a new “T5X” terminal alongside Terminal 5
- T5X to serve as a second “front door” for passengers with new public transport interchange
- Delivery of T5XN – a satellite terminal near the third runway, linked by track transit
- Additional airside aprons, stands, baggage systems, and connectivity infrastructure
£15bn for airport-wide modernisation
- Major redevelopment of Terminal 2, including two satellite piers
- Phased closure and demolition of Terminal 3
- Refurbishment of existing infrastructure, including the Central Terminal Area
- Public realm upgrades and supporting works
If ministers provide regulatory feedback by September, Heathrow aims to begin design, mobilisation and early procurement activity this year.
Further details: Heathrow Airport unveils £49bn ‘superhub’ expansion | Construction Enquirer News
