TRAIN users at Windsor and Eton Riverside station are being advised not to travel to London Waterloo today after a partial derailment this morning on the line, Tuesday August 15.

The derailment incident near London Waterloo station itself, at around 5.40am, has been causing substantial delays.

South West Trains (SWT) said all services would be disrupted after a "low speed partial derailment" between Waterloo and Vauxhall stations, in which a passenger service collided with a Network Rail engineering wagon.

Delayed passengers tweeted pictures of the SWT service leaning against the wagon and resting at an angle on the tracks, with men in high-vis uniforms standing close by.

London Ambulance Service said it had checked over three people, adding: "Thankfully they did not need to go to hospital."

The points failure is stopping SWT from using one of five lines into and out of the station, National Rail said.

It said "major disruption" between Waterloo and Vauxhall stations was expected until 1pm.

In a joint statement, Network Rail and SWT warned passengers not to travel.

They said: "There are no injuries to passengers or staff and a very limited service is running to and from Waterloo, which is expected for the rest of today.

"The incident happened as the train was pulling away from its platform at Waterloo at 5.40am.

"An investigation to establish the cause of the incident is under way."

Passengers at Windsor Eton Riverside station this morning were able to catch trains to Waterloo but faced delays before they arrived and long waits during their journey.