West Midlands Railway has announced that there are no trains running between Hereford and Worcester this morning.
This is due to reports of icicles in the tunnel near Colwall.
Temperatures dropped to lows of -7c in Herefordshire and Worcestershire overnight.
Rail replacement buses will replace the train services this morning, but passengers are advised to expect some delays and cancellations.
An update from West Midlands Railway said:
“No service between Worcester and Hereford.
“Due to the cold weather, Network Rail has closed the lines due to icicles in the tunnel near Colwall.
“Road transport has been ordered between Worcester and Hereford in both directions.”