Thousands of passengers have been told to “postpone” their Eurostar train journeys to and from Paris with the firm expecting cancellations and delays.
Eurostar said the disruption was “due to part of the track being temporarily closed on the French network”.
It advised passengers to keep an eye on the Eurostar website and app for further updates.
Nine trains between London and Paris have been cancelled for Monday while a further 17 have been delayed, according to the Eurostar website.
The firm has also cancelled and delayed several journeys between Paris and Brussels as well as Paris and Amsterdam.
Other Eurostar journeys, such as those between London and Amsterdam, have not been affected by the issue.
Eurostar said the problem was “due to a power failure on the highspeed line” between Moussy and Longueil in France, which it said wasbeing dealt with by France’s state-owned rail operator SNCF Réseau.
“We advise passengers on these routes to postpone their journey if possible. They can exchange their ticket free of charge or request a full refund,” Eurostar added.
It said extra staff have been sent to affected stations to help passengers.