The accelerated investment plan will see £1.05bn spent on the airport’s infrastructure in 2025, and an additional £1.29bn invested in 2026 .
The investment will enhance capabilities across all terminals, including baggage delivery and projects to support punctual departures and arrivals.
Heathrow CEO Thomas Woldbye said: “Heathrow is the UK’s gateway to the world, and ultimately, the country’s gateway to growth.
“Today’s announcement confirms that we will continue to invest more than £1bn of private sector cash each year into the airport to deliver facilities our airlines and passengers want, while boosting the UK economy and creating opportunities for businesses up and down the country.”