CrossCountry trains, including those serving Glasgow and Edinburgh, are expected to return to a full timetable on Monday after a power cut caused widespread cancellations.
Almost all of the long-distance operator’s services were withdrawn on Sunday after an outage at its Birmingham control centre knocked out systems used to manage trains across the network.
Services between Glasgow and Edinburgh and between Newcastle and Edinburgh were among those affected by the disruption.
National Rail said CrossCountry was unable to operate most of its services on Sunday, with trains between Peterborough, Cambridge and Stansted Airport among the few able to continue running.
The operator said most facilities had since been restored and a very limited number of trains were expected to begin running again from around 6pm, primarily on routes towards Leicester and Derby.
CrossCountry now plans to restore its full service on Monday, August 24.
A spokesperson said: "Our key priority is now to restore as close to a normal service as possible for our customers tomorrow [Monday, August 24].
"With most facilities now reinstated, we are planning to operate a very limited number of services from around 18:00 this evening, primarily on routes towards Leicester and Derby.
"Planning is underway to support a full train service on Monday and we are working closely with National Grid and industry partners as recovery efforts continue."
Glasgow Central and Edinburgh Waverley are two of CrossCountry’s main Scottish destinations, with the operator running services between the cities via Haymarket and Motherwell.
Its Scottish network also extends north from Edinburgh through Fife and Tayside to Aberdeen, serving destinations including Kirkcaldy, Dundee, Arbroath, Montrose and Stonehaven.
Passengers are being strongly advised to check their journeys before travelling on Monday despite the planned return to a full timetable.
Ticket acceptance remains in place with other train operators while the network recovers.
Passengers delayed by 30 minutes or more may be entitled to Delay Repay compensation, while those who abandoned their journey because of Sunday’s disruption can seek a refund from where they bought their ticket.
A CrossCountry spokesperson said: "We would like to thank our customers for their patience and understanding during today’s disruption."
