ScotRail’s £80m gamble: replacing old trains with… old trains

Scotland’s publicly owned operator ScotRail has unveiled plans for an £80 million fleet overhaul that will see its ageing InterCity High-Speed Trains phased out in favour of replacement stock. The move has been framed as a necessary step to improve reliability and reduce maintenance costs, but it raises deeper questions about long-term planning on the UK rail network—particularly given the age of the trains set to replace them.

The outgoing fleet, based on the iconic British Rail Class 43 (HST) power cars and Mk3 coaches, has become increasingly problematic in recent years. Originally introduced to ScotRail services in the late 2010s as a cost-effective solution for intercity routes, the refurbished sets have suffered from availability issues and rising upkeep demands. Engineers and insiders have pointed to the challenges of maintaining rolling stock that, in some cases, dates back to the 1970s, even with extensive modernisation.

However, the proposed replacement—units derived from the British Rail Class 222 fleet—has prompted scrutiny of its own. Built between 2004 and 2005, these trains are themselves now more than two decades old. While newer than the HSTs they will replace, they are far from modern by current standards, particularly in an era where electrification and decarbonisation are central to rail policy. Critics argue that introducing another ageing diesel fleet risks repeating the same cycle of short-term fixes.

The decision reflects a broader tension within UK rail investment strategy. Rather than committing to entirely new rolling stock or accelerating electrification on key Scottish routes, the plan appears to rely on cascading older trains from elsewhere on the network. This approach has long been used to manage costs, but it often results in regions inheriting second-hand fleets that come with their own maintenance and reliability challenges. The question is whether this represents prudent financial management or a lack of long-term vision.

Passengers are likely to see some immediate benefits, particularly in terms of consistency and potentially improved availability compared with the struggling HST sets. The Class 222 units, designed for intercity use, offer modern amenities relative to the older trains they replace, including better acceleration and more standardised onboard systems. Yet these advantages may be tempered by the reality that they are not new trains, and their lifespan within ScotRail’s fleet may be limited without further significant investment.

Ultimately, the overhaul highlights a recurring issue across Britain’s railways: the reliance on incremental upgrades rather than transformative change. As ScotRail prepares to introduce trains that are already into their third decade of service, the wider question remains unresolved—whether the UK’s rail network is being modernised in any meaningful sense, or simply maintained through a rolling programme of replacements that never quite address the root of the problem.