New Delhi, Jan. 1 -- Power problems and a stuck train interrupted rail services through the undersea Channel Tunnel connecting the United Kingdom and continental Europe on Tuesday, operators said, stranding passengers during the busy end-of-year holidays.

At Paris' Gare du Nord station, Jamie and Issy Gill scrambled to find a flight back to the U.K. after their Eurostar train to London was canceled, desperate to be reunited with their baby boy after a getaway in the French capital.

"We came for my 30th birthday," Issy Gill said, wiping away tears.

Jamie Gill said they'd take a roundabout route back, with a flight via Birmingham on Wednesday.

Eurostar - which runs passenger trains between London and Paris and other European destination...