Delays of up to 40 minutes on Grand Central Trains between York and Sunderland due to signalling problem at Thirsk.
Northbound lines have reopened and trains can run through the area with delays.
There is no estimate for a normal service.
Also affecting East Coast, First Transpennine Express and CrossCountry.
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The landslip, which caused part of the Carlisle to Newcastle rail line to close, is expected to re-open fully on Monday, February 8.
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