Someone has been hit by a train in Cornwall.
CrossCountry and Great Western Railway services between Penzance and Truro are being affected. Trains may be unable to run until at least midday (5 February).
There are delays on CrossCountry services between Birmingham New Street and Cheltenham Spa due to a defective track and speed restrictions.
A number of trains were cancelled, or had routes and timetables altered, this morning because of flooding on the line at Dawlish.
CrossCountry trains, who were the only provider effected, say it is down to the type of train they use, which can experience technical issues if hit by waves.
The Voyager engine is not used by Great Western Railway.
The RMT union has announced that Friday's strike planned for CrossCountry Trains has been suspended after "significant progress" was made in talks.
The action was being organised by workers in protest at a range of issues, including training, and the use of league tables to record performance.
There are delays of up to 45 minutes on CrossCountry trains between Birmingham New Street and Bristol Temple Meads due to a broken down train between Cheltenham Spa and Ashchurch.
The problem between Cheltenham and Aschurch is also affecting First Great Western services.
There's disruption on CrossCountry train services between Birmingham New Street and Cheltenham Spa due to flooding between Barnt Green and Bromsgrove.The line is blocked which is causing delays to services.