Southeastern will run ‘ghost trains’ throughout the night as part of efforts to keep rail tracks free of snow and ice.
Workers will also be using de-icer units and snow ploughs as well as heating strips on the rails.
A speed restriction will be put in place on the high speed route tomorrow (February 28).
A Southeastern spokesman said: “We’re working closely with Network Rail to keep the railway network open and clear from snow and ice. We are running our normal timetable today, but as a precaution, we have lengthened some trains to ensure they are more reliable in snow and ice.
“This, together with some infrastructure issues, has resulted in some cancellations and delays, and we apologise to passengers who have had trouble getting to where they want to go.
“All of the confirmed cancellations for today have been uploaded to journey planners. Our priority is to get passengers home this evening, so check before you travel.”
“We’re expecting to run our normal timetable on Wednesday, however there will be a small number of cancellations and we’ll confirm these as soon as possible. A speed restriction has been imposed on our high-speed route between Ashford, Ebsfleet and London St Pancras, which will cause some delays.
“If conditions deteriorate significantly, it may be necessary to introduce an emergency timetable which would mean a reduced service with some routes and stations not being served.
You can find up-to-date information about services on National Rail Enquiries at nationalrail.co.uk or the ‘On Track’ app, or Twitter account @Se_Railway.