HS2 should be replaced with a plan to improve existing infrastructure

The argument

This argument holds that work on HS2 should stop because the project should be replaced with something better: a programme of improvements to the railway network Britain already has, which would deliver more benefit, to more people, sooner, for the same money. The comparison is one of priorities. HS2 concentrates tens of billions of pounds on a single new north–south trunk line whose central offer is faster journeys between London and a handful of major cities, arriving decades from now. Yet the daily reality of British rail is not that London is too far away; it is overcrowded commuter services, slow and unreliable cross-country links, lines never electrified, Victorian signalling, and the poverty of east–west connections across the North — journeys between Liverpool, Manchester, Leeds, Sheffield and Hull that remain absurdly slow. The same investment spread across electrification, reopened lines, longer platforms, modern signalling and upgraded regional routes would touch millions of everyday journeys rather than a minority of intercity ones, and its benefits would begin arriving in years, not decades. Proponents add that incremental upgrading is lower-risk and fairer. It avoids HS2's pattern of ballooning costs locked into one all-or-nothing scheme; it spares the countryside and habitats along a new route by working within existing corridors; and it directs spending toward the regional connectivity that actually constrains northern economies, rather than tightening London's gravitational pull. From this standpoint, the question is not rail investment versus none but the right rail investment — and a plan that improves the whole network beats a single prestige line on every measure that matters. Because HS2 should be replaced with a plan to improve existing infrastructure, this argument holds, works on HS2 should stop immediately.

Premises

Counter-arguments

Defenders argue the trade-off is misdescribed, because the two programmes are complements rather than alternatives. The project's principal justification was never journey time but capacity release: the West Coast Main Line is among Europe's most congested mixed-traffic railways, and running fast intercity services on it consumes paths that slower commuter and freight trains cannot then use. Moving those services onto a dedicated line frees exactly the capacity the argument wants spent on crowded local services and freight. On that account, 'improve what we have' and 'build a new line' are the same policy approached from opposite ends. The alternative has moreover been tried at scale, and it is where the cost pattern being criticised actually comes from. The West Coast Route Modernisation of the 2000s set out to upgrade an existing railway in place; it ran far over its original budget and delivered years of weekend closures for a fraction of the capacity a new line provides. Great Western electrification repeated the pattern. The reason is structural: a Victorian railway has to be closed to be rebuilt, and every possession is disruption to the passengers the upgrade is meant to serve. The habitat argument also transfers less cleanly than assumed. Widening, electrifying and resignalling existing corridors takes land, fells lineside trees and affects protected sites too; working within existing corridors is cheaper environmentally than a new route, but it is not free. And the money is not fungible. Cancelling a project does not deliver its budget to regional schemes — a proposition tested since, when the northern legs were cancelled in 2021 and 2023 and the savings were promised to a package of local transport schemes that has been repeatedly revised and reduced. The North lost the line and did not receive the alternative.

Rejecting the premises

[Rejecting P1] The project's principal case is capacity release rather than speed: moving intercity services onto a dedicated line frees paths on congested existing track for the commuter and freight services the premise wants improved, making the two programmes complements. [Rejecting P2] Upgrading in place has been tried at scale and is itself the source of the cost pattern criticised — the West Coast Route Modernisation ran far over budget with years of closures for a fraction of a new line's capacity, because a Victorian railway must be shut to be rebuilt. [Rejecting P3] Working within existing corridors is not habitat-neutral, since widening, electrification and resignalling also take land and affect protected sites; and the money is not fungible, as the cancellation of the northern legs in 2021 and 2023 demonstrated, with the promised replacement package repeatedly revised and reduced.