Heathrow Airport's proposed third runway could significantly increase passenger traffic, raising concerns about the future of the Heathrow Express train service. Currently, the Express is underutilized, serving only a small fraction of airport travelers, while alternatives like the Elizabeth line are gaining popularity due to lower fares and better connectivity.
Transport for London is advocating for a review of the Heathrow Express's viability, suggesting that its limited usage may not justify its operational costs, especially as the airport prepares for an expansion that could exacerbate ground congestion.