Commuters are facing delays and possible cancellations this morning due to a signalling system fault.
The 9.45am Greater Anglia service from Norwich to Sheringham has been cancelled due to a fault with the signalling system. The 10.47am from Sheringham to Norwich has also been cancelled.
On Twitter Greater Anglia tweeted: 'Due to a fault with the signalling system between #Norwich and Hoveton & Wroxham some lines are blocked. Services running to and from these stations may be cancelled, delayed or revised.'
The disruption is expected until 11:00
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