Train Services: Extreme Weather

Edward Morello Excerpts

Tuesday 3rd November 2026 Westminster Hall

[Josh Newbury]

The hon. Gentleman is absolutely right to raise that issue. Extremes in temperature are increasingly affecting our railways. In many cases our lines were not designed to run at temperatures into the high 30s or even below minus 10°, although they are increasingly having to endure those conditions. Those conditions are not going to get any easier—milder winters are not suddenly going to come back—so we absolutely need to make sure that the services in and out of the train are resilient to that reality.

The hon. Gentleman leads me perfectly on to my next point. We know that high temperatures affect the railways. Rails expand in the heat, signalling equipment can overheat and overhead lines can also be affected. Network Rail already takes steps to manage those risks, including through track inspections, painting rails white to reduce heat absorption, and monitoring infrastructure during hot weather. I recognise the hard work that railway staff do to keep services safe in difficult conditions, and I sincerely thank them.

I want to know what more can be done to make the Chase line more resilient. We should not be having to have the same conversations every summer. We all know that hotter and hotter weather will be coming. Passengers need to know that lessons are being learned and that the work is happening before the next heatwave.

[Edward Morello (West Dorset) (LD)]

In the south-west, we share a lot of those problems. The Salisbury-to-Exeter line runs a reduced service over the summer as a result of “soil moisture deficit”—a catchy term that means the ground is too dry and too hard, and the trains cannot run over it. That is not a new problem: we had a reduced service last year and the year before. Proper planning for what is now our everyday experience of climate change is vital. I wonder whether the hon. Gentleman agrees with me that the Railways Bill, currently in the other place, is an opportunity to ensure that our infrastructure is resilient for the future and is also taking account of our climate targets.

[Josh Newbury]

We are hearing about a different impact from a different part of the country; it is great to get that perspective from the west country. I completely agree that we need to look at how the changing climate will affect different parts of the country in different ways. The different realities, different weather patterns and different topographies all need to be factored in. I also agree that the Railways Bill, which I will come to a little later, provides us with an opportunity to think about resilience when it comes to the future of the railways for decades to come. That is absolutely where our thinking needs to be: in the long as well as the short term.