About 1,000 passengers have been left stranded on two broken down cross-Channel trains for several hours, rail operator Eurostar has confirmed, BBC reported.
The 1932 BST service from London St Pancras to Paris and the 1934 BST train to Brussels stopped outside Lille, north-east France, at around 2100 BST.
An electricity supply failure caused the breakdowns, and left only emergency lighting working on board.
A Eurostar spokesman said the problem would delay some Saturday services.
He told the BBC that about 460 passengers were being transferred to replacement buses to take them on the 60-mile journey to Brussels in Belgium.
Another 500 or so were on the Paris-bound train expected to be towed into Lille station, where a diesel replacement train was to take them on to the French capital.
Earlier this week a power cable collapsed on to a Eurostar train that had just arrived in London from Paris, causing delays to 11 services.