South West Trains has advised passengers that it plans to restore its normal weekday timetable tomorrow.
All lines will reopen with trains calling at all stations, although some services may be subject to alteration and formed of fewer coaches than normal.
Test trains will run over lines which have been closed over the last few days due to icy weather conditions. With freezing temperatures expected to continue in parts of the UK over the next 48 hours, services will continue to be reviewed according to the developing conditions.
Passengers are advised to check for updates before they travel and allow extra time to get to and from stations.
Tim Shoveller, South West Trains Network Rail Alliance Managing Director, said: "Severe weather affects all forms of transport and access to our network also depends on road conditions which affect the travel of our passengers and our staff.
"The past few days have been challenging. I appreciate our passengers have faced longer and less comfortable door to door journeys than normal and I would like to thank them for their continued patience and understanding.
"The revised timetables we put in place have worked effectively and helped significantly to minimise the disruption. Our train and station staff, customer service teams and the engineers responsible for track and signalling have all worked tirelessly, often in freezing conditions, to keep the network open.
"Tomorrow, we will be restoring our normal weekday timetable, however we would still advise passengers to check the situation before they travel in view of the current weather situation. We will continue to monitor the conditions and provide passengers with the most up-to-date information to allow them to plan ahead."
For South West trains updates visit www.southwesttrains.co.uk or follow South West Trains Twitter account @SW_Trains.