Great North Eastern Railway (GNER), which links London to Scotland, has been forced to implement an emergency timetable after the Railway Inspectorate,which oversees safety on the network, ordered a speed limit of 80mph on the trains - which are capable of 125mph.
The move will lengthen many journeys. A trip to York from the capital usually takes two hours, but with the speed restriction in force the train will take an extra 60 minutes.
"It is a precautionary measure," said a spokesman for GNER. "We expect to start to clear up the problem tomorrow and have full services running by the weekend."
The HSE acted after a high-speed service derailed just 20 minutes into its journey on Tuesday. Nine people were hurt and crash investigators suspected that a cracked wheel caused the train to leave the tracks.Reuse content