(Image: Archant)
Train services on the Great Northern line should return to normal after an earlier signalling problem at Potters Bar was rectified.
National Rail have tweeted that the fault, reported around 8am this morning, has been solved.
It caused delays between Stevenage and Kings Cross and left passengers with delays of anywhere up to 30 minutes.
It not only affected Great Northen services but also Virgin East Coast from Newcastle and Leeds, Grand Central trains from Bradford and Sunderland and First Hull trains.
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