Signal chaos delays thousands of people's journeys
Thousands of commuters travelling from Portsmouth to London have been experiencing delays after a Network Rail signal box failed.
South West Trains (SWT) said it was alerted about the problem with the box, which controls signalling for Fratton, Havant and Fareham, at about 0530 BST.
Signalling failures also shut part of the line at Havant in Hampshire on Monday, disrupting SWT services.
Network Rail is resetting signalling systems in the affected area.
A spokesman said: "We have a signalling centre in Havant so we have cleared a small area of the Portsmouth, Havant and Fareham triangle to reset all the signals.
"Trains are running at an amended timetable.
"We apologise for any inconvenience caused and hope to get the trains running normally as soon as possible."
A spokeswoman from SWT said: "Train services returned to normal after 1900 BST yesterday."
SWT services between Guildford in Surrey and Aldershot in Hampshire were also disrupted because of the signal problems on Monday.