Tunnel to Heathrow could be privately funded under revived rail link plans

"The study concludes that the rail link could deliver strong economic returns under both two-runway and three-runway expansion scenarios at Heathrow Airport, indicating its potential impact on regional connectivity."

"One of the headline findings is that estimated construction costs have fallen, with the report identifying potential efficiencies - particularly in tunnelling - that could significantly reduce the overall bill."

"Passenger numbers at Heathrow have rebounded faster than expected following the pandemic, with 2025 passenger traffic already matching pre-COVID forecasts, suggesting a strong demand for the rail link."

"Under a two-runway Heathrow scenario, the scheme is expected to be viable, although returns may be relatively modest unless costs can be further reduced, highlighting the importance of financial management."

A refreshed economic study indicates that the Western Rail Link to Heathrow has become more viable due to reduced costs and potential private investment. The railway would connect Langley to Heathrow's Terminal 5, utilizing existing empty platforms. Although classified as a Nationally Significant Infrastructure Project, it was previously on hold due to the pandemic. The study shows strong economic returns under both two-runway and three-runway expansion scenarios, with construction costs falling and passenger numbers rebounding faster than expected. A 2032 opening could yield returns by 2044.

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