Train cancellations ongoing after wires damage
Govia Thameslink RailwayA railway line between two counties has been suspended for tests to be carried out following damage to overhead wires.
Train operator Great Northern said the damage took place between Ely, Cambridgeshire, and King's Lynn, Norfolk, on Monday, however, disruption has continued into Wednesday and is expected until 18:00 BST.
While lines reopened on Wednesday morning, the train company said recent checks had shown more testing and inspections were needed before trains could run safely.
"Great Northern understands how frustrating the continued disruption and uncertainty will be, particularly after services had started to resume earlier today," said National Rail.
On Tuesday, London King's Cross to King's Lynn services were cancelled, whereas a number of King's Cross to Ely services were reduced, a Great Northern spokesperson said.
Passengers have been advised to check journeys before they depart.
National Rail has told those wanting to travel on the line that tickets will be accepted on alternative Great Northern and Thameslink services between Ely, Cambridge and London stations.
Those travelling between Ely and Cambridge can travel on CrossCountry services, while those going between Ely, Cambridge and London Liverpool Street can travel on Greater Anglia services.
Clare Worden/BBCNetwork Rail engineers who have worked at the site overnight carried out further testing, reviewed footage and carried out detailed inspections on foot to identify the damage.
A number of trains were found to have also been affected and will need to be repaired before they can return to service.
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The spokesperson said: "The overhead line fault is causing damage to the pantographs - the arm which extends from the top of the train to draw power from the overhead lines - on our trains.
"These trains are currently in the process of being repaired, meaning that fewer trains than normal are currently available."

On Tuesday in the House of Commons, Conservative MP for North West Norfolk James Wild, asked the Prime Minister for "rapid action" to restore the "reliable" service between King's Lynn and London King's Cross.
He said in July there had been 380 trains cancelled on that route and in August 280 trains cancelled.
While trains were impacted in West Norfolk on Tuesday, passengers also faced disruption and cancellations between Norwich and Brundall Gardens caused by a signalling fault. However, services resumed at 16:00, the same day.
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