Delays of up to 30 minutes on East Coast between York and Doncaster due to problem at a level crossing.
There is no current estimate for when a normal service will resume. Also affecting CrossCountry.
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Sunday's Pollen for the North East region
Cladding from high-rise flats in 25 local authority areas has now proved to be potentially flammable in the urgent safety review.
Police have shed further light on the crash, which took place in Newcastle while people were celebrating Eid.