There may also be ‘short-notice alterations’ the business has warned

East Midlands Railway has axed trains to Sheffield and cut the speed of others due to the heatwave.

The rail firm is cancelling services between Sheffield and Liverpool on Wednesday and Thursday, August 12-13, “to maintain fleet availability across the network”.

EMR train at Sheffield station - services to Liverpool are being axed. | IM

placeholder image — EMR train at Sheffield station - services to Liverpool are being axed. | IM

Other trains may run slow and there may be “short-notice alterations’” the business has warned.

The UK Health and Security Agency has issued an amber heat-health alert for six regions, including Yorkshire, from Wednesday to Friday, August 12-14.

Philippa Cresswell, of East Midlands Railway, urged customers to travel before noon to avoid the hottest part of the day.

East Midlands Railway has cut services between Sheffield and London due to reliability issues with Hitachi Rail’s new Class 810 fleet and maintenance issues with the existing Class 222 fleet. | IM

She added: "The hot weather means we'll need to make some temporary changes to our services to keep the railway operating safely.

"If you do need to travel and the journey is essential, we'd recommend travelling before midday and checking your journey before setting off.

"We appreciate these changes may inconvenience some customers and we'd like to thank everyone for their patience and understanding while we work to keep people moving safely."

East Midlans Railway has been hit by strikes. | IM

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Temperatures in Sheffield could hit 35C on Thursday, the Met Office says.

EMR caused a storm in July when it cut services between Sheffield and London due to reliability issues with Hitachi Rail’s new Class 810 fleet and maintenance issues with the existing Class 222 fleet.

The embattled company has also been hit by strikes by the RMT union over safety on the 810 fleet - which it claims has been operating “with a significant number of faults”.