Eurostar is to run a full service today but trains face possible delays due to work in the Channel Tunnel.
While the south tunnel has been operational, one section of its north tunnel has remained closed.
The engineering works that Eurotunnel has been carrying out on this section have not been completed and were continuing last night.
“As Eurotunnel will not be fully operational, Eurostar services may be subject to delays of up to around 30 minutes,” the high-speed passenger service said.
The ongoing engineering works in the tunnel mean that a train due to leave London for Paris at 8.01pm tonight has been rescheduled to depart from London at 7.31pm, the company said.
The company ran a full service between the UK and the continent yesterday following a weekend of disruption after a lorry fire on Saturday and an unrelated electrical fault the following day.
Referring to Le Shuttle services, Eurotunnel said: “Following the tunnel incident on Saturday, we are now running with just one section of the tunnel out of action.
“This is allowing us to operate a reduced timetable with one passenger departure every 90 minutes.”
Passengers are being advised to check in on time for their booked departure. They will then be advised on the time they will depart.