Hundreds of rail engineers will spend the next week replacing nine sets of points and track at Fareham railway station in Hampshire. The station will get a big upgrade costing about £1 million pounds.
For passengers buses are replacing many trains between Southampton and Portsmouth.
Thousands of rail passengers are facing nine days of disruption from Saturday while an important junction on the South Coast line is renewed.
Industrial action by workers at Southern Rail has brought chaos to the journeys and lives of train passengers who use the company's routes and services over the past few months. Passengers have been forced to find other means of transport.
This report is from our Transport Correspondent Mike Pearse.
Passenger and freight services through the Channel Tunnel were suspended earlier today because of a technical fault in the tunnel. Both Eurotunnel and Eurostar services were affected, while the tunnel was closed. Technical teams have now resolved the issue but passengers are warned of long delays. Lorries are facing a 90 minute wait for Check In and a further 4 1/2 hour wait on the Channel Tunnel Terminal.
We are still awaiting further information on the delays, we're sorry for the inconvenience.
Due to a Tunnel power supply problem our service is temporarily suspended. Technicians are on site to rectify the problems swiftly 1/2 ^LD
We estimate that the service will not resume before 17:00. We're offering customers transfer to a ferry; pls check-in to arrange this. ^LD
Didcot Parkway station has now reopened after earlier flooding of the subway. Apologies for disruption today.
The MP for Wantage, Ed Vaizey, has been giving his reaction to the flooding of Didcot Parkway railway station in his constituency, after visiting the site earlier today.
While there are services, in one direct. Services to Reading and Paddington have been disrupted for much of the day.
For the latest information on services at Didcot Parkway railway station visit the National Rail website.
The MP for Wantage, Ed Vaizey, has visited Didcot Parkway railway station. The site, which was flooded overnight, is in his constituency.
The flooding at Didcot Parkway station in Oxfordshire has left the station inaccessible to customers wanting to travel in the Oxford and Reading/London Paddington direction.
The Didcot Parkway platform towards Swindon, Bristol and South Wales is open. Customer travelling from Didcot towards London are advised to travel to Swindon and then back towards Reading/London Paddington.
Highways England have reported that a train has broken down in the Channel Tunnel. There are severe delays to travellers, and delays to freight on the M20.
It is being reported that there is a waiting time of up to six hours to the Freight Eurotunnel service at Folkestone due to the incident in the Channel tunnel. Lorry drivers are experiencing a waiting time of up to 90 minutes at Check-In and a further four-and-a-half hours on the Channel Tunnel terminal.
Sandford Lane in Woodley is now closed in both directions due to flooding between Colemans Moor Road (Woodley) and B3030 Davis Street / Dunt Lane (Hurst).