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HS2 could cost up to £102.7bn and trains will be slower than first planned

HS2 could cost up to £102.7bn and trains will be slower than first planned

The new cost range and train speed are being announced as a "reset" of the delayed, over-budget and vastly scaled-back project is carried out.

Editorial perspective

AI-assisted

Britain's flagship infrastructure project continues its downward trajectory, with revised estimates pushing total costs to £102.7 billion while simultaneously reducing operational specifications. This represents a cautionary tale for public-private partnerships and long-term capital allocation in developed economies. The combination of cost escalation and performance degradation undermines the original business case that justified initial investment, raising fundamental questions about sunk-cost decision-making in government projects.

For investors, this signals heightened sovereign execution risk in UK infrastructure bonds and related construction sector equities. The "reset" language suggests authorities are managing expectations downward rather than solving underlying delivery challenges. More broadly, persistent overruns on signature projects like HS2 affect currency valuations and fiscal credibility—factors that influence gilt yields and the pound. When governments cannot deliver core infrastructure efficiently, it constrains productivity growth assumptions embedded in equity valuations across the broader economy.