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Heathrow’s £2.3bn investment over the next two years will be the “largest private sector capital investment in UK transport infrastructure”.

The investment will be used to enhance capabilities across all terminals, including baggage delivery and projects to support punctual departures and arrivals.

The £2.3bn, which Heathrow says is an uplift of £244m on previously forecasted investments, will be divided into £1.05bn to upgrade the airport’s infrastructure in 2025 and £1.29bn in 2026.

This compares to the £1.1bn investment in the airport in 2024, including £191m on upgrading security lanes.

The announcement comes after Saudi Arabia’s Public Investment Fund and French investment firm Ardian completed a €4bn deal to acquire a combined 37% stake in the airport from Spanish construction firm Ferrovial and other shareholders of FGP Topco, the parent company of Heathrow Airport Holdings.

According to the airport, the £2.3bn investment boost is the largest private sector capital investment in...