The warning comes as operators anticipate some disruption to the lines as temperatures soar this week
Passengers are being urged to try to avoid train travel unless necessary this week as the UK endures its fifth heatwave of the year with soaring temperatures.
In some regions, temperatures are forecast to reach 30C and more on Thursday, prompting operators to issue an early warning over potential disrupted services.
The railway can be adversely affected by heat, which can lead to buckled rails, sagging overhead electric wires and lineside fires. Steel rails can exceed 50C when the air temperature is 30C.
Chiltern Railways and East Midlands Railway issued alerts to “only travel if essential”.
Other operators will either run a reduced timetable or are warning about the potential for short-notice cancellations.
Northern said it will run fewer trains than normal on some routes in the North West and Yorkshire on Thursday because of the extreme heat.
It told passengers that high temperatures “increase the risk of issues on the railway and with the reliability of our trains”, which means it must make adjustments to its usual timetable “to keep trains running”.
Some ticket restrictions have been eased, and passengers are being asked to check for travel updates before setting off, as well as carry water with them to stay hydrated.
Chiltern Railways said temperatures are expected to reach highs of 38C on parts of its network on Thursday. It will operate a reduce timetable between 11am and 8pm.
Among the changes are:
- Off-peak services between London Marylebone and Birmingham Moor Street will operate hourly instead of half-hourly.
- Some services between London Marylebone and Oxford will be cancelled.
- No Chiltern Railways services will operate from Birmingham Snow Hill from 10.15am until the end of the day.
Michael Stewart, commercial and customer strategy director at Chiltern Railways, said: “We are asking customers to travel only if essential on Thursday because of the exceptionally high temperatures forecast across our network.
“By operating a reduced timetable during the hottest part of the day, we can provide a more reliable and comfortable service for customers.”
East Midlands Railway said trains between Nottingham and Worksop, and on the Nottingham to Leicester regional stopping route, will not run on Thursday after midday.
The Liverpool Lime Street to Norwich route will run between Sheffield and Norwich only.
Another operator, Northern, said it will run fewer trains than normal on some routes in the North West and Yorkshire on Thursday because of extreme heat.
It told passengers: “High temperatures increase the risk of issues on the railway and with the reliability of our trains, which means we have to make adjustments to our usual timetable to keep trains running.”










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