Hundreds of Eurostar passengers were stuck on trains for hours overnight after an overhead cable problem.
The problem, at Lille in northern France, affected nearly 700 passengers travelling on yesterday's 6.01pm London to ParisEurostar service as well as around 600 who were on the 6.04pm London to Brussels train.
After not moving for many hours, the passengers were only able to complete their journey when diesel trains arrived to tow the stricken trains to their destinations.
A Eurostar spokesman said the Paris train had finally arrived six hours late, while the Brussels train had got in nine hours late.
The spokesman went on: "There was a failure of the overhead power line just outside Lille.
"The passengers on the Brussels train are entitled to twice the amount of a complete refund plus a free return trip, while those on the Paris train can claim an entire refund plus a free return trip."
Exactly 20 years ago the first Eurostar train, carrying passengers, sped through Kent from London to Paris. Eurostar has been a major success now carrying four out of five passengers from the South East to Paris.
But there have also been major problems. Broken down trains in the tunnel left thousands stranded. For all of its history our Transport Correspondent Mike Pearse has covered Eurostar, in good times and bad. He's been given exclusive access to talk to staff and the man in charge.
The number of passengers taking Eurostar services through the Channel Tunnel increased this summer.
The high-speed train company carried 2.8 million passengers in summer 2014 (July to September) - a 3% rise on the summer 2013 total of 2.7 million.
Sales revenue for July to September 2014 rose 2% - going up from £207 million in summer 2013 to £211 million in summer 2014.
This is the 10th successive year of growth in passengers and sales revenue for Eurostar which celebrates its 20th anniversary next month.
In May 2015, the company is launching a new all-year-round service direct from London to Provence in southern France, stopping at Lyon, Avignon and Marseille.
Tickets go on sale in early December 2014.
Then in 2016 Eurostar starts a direct service from London to Amsterdam.
Before then, Eurostar will be unveiling on November 13 - the eve of its 20th anniversary - its new e320 trains which will be capable of carrying 900 passengers and reach speeds of 200mph. They will enter service next year.
The UK Government is seeking buyers for its 40% stake in Eurostar - a move criticised by Labour and rail unions.
Eurostar are celebrating transporting 10 million passengers in a single year as well as 140 million passengers since they began in 1994.
Coinciding with the start of its twentieth year of operation, 2013 has seen Eurostar carry, for the first time, 10 million passengers in a single year.
The first commercial Eurostar services departed London, Paris and Brussels on the 14th November 1994 and by the end of the year, more than 150,000 passengers had travelled between the Capital cities.
The record breaking passenger milestones were achieved today (30th December) as 2013 draws to a close.
Part of the Eurostar Terminal at Waterloo, which was closed six years ago, will be used from today during disruption at the station.
One of the platforms will be used by South West Trains to help return services to normal.
It will come into full passenger use next May it was confirmed today.
Commuters have been left frustrated that the station gets crowded and lacks capacity when the former Eurostar platforms are empty since services transferred to St Pancras.
Now one platform will be used by services from Windsor.
Longer term plans to upgrade the station could see more of the platforms used, which would involve major track and building work.
Eurostar has announced that its tickets sales for July to September 2013 reached £207 million - a ten percent increase on the same period last year.
The firm said the number of passengers using its high speed trains through the Channel Tunnel this summer rose by 5% to 2.7 million.
Eurostar has announced plans to launch London-Amsterdam services in 2016.
It aims to take business away from the airlines.
But Kent International Airport, which started daily flights to Amsterdam six months ago, says it's confident it can beat off the competition. John Ryall reports.
Eurostar has signed an agreement with the Dutch railways to launch direct services between London and Amsterdam from December 2016. The deal for the high speed line is due to be ratified by the Dutch Parliament over the coming months.
Eurostar plans to run two services a day between London and Amsterdam with journey times of around four hours.
Kent school children joined Eurostar to celebrate its 10 year anniversary of setting the high speed rail record.
A special plaque has been unveiled today by the driver, Alan Pears, who set the record in Kent.
On July 30, 2003, a Eurostar train sped through Kent countryside to set the record at 208mph on High Speed 1.
The record was taken near Medway Viaduct and to celebrate the record an event is taking place today.
Carrying an increased number of American, Brazilian and Australian travellers, Eurostar saw its operating profit rise from £25.0 million in 2011 to £52.3 million in 2012.
In total, the company carried 9.9 million passengers last year compared with 9.7 million in 2011.
Passenger numbers were strong after the Olympics, with traffic up 5% in the last three months of last year compared with the October-December 2011 period.
While business passenger number remained flat last year, the leisure travel market rose 3%. Non-EU passenger numbers grew 8% in 2012.
Eurostar chief executive Nicolas Petrovic said: "Despite the challenging economic climate, we delivered a strong performance in 2012.