Commuters stranded at Welwyn Garden City train station. Picture: Mia Jankowicz. (Image: Archant)
Trains are currently unable to run on the Great Northern line between Finsbury Park and Stevenage.
Great Northern has tweeted stating that services are unable to run between the two stations and are likely to be diverted via Hertford.
Services between Welwyn Garden City and Stevenage are currently delayed due to a fault on a train.
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