National Rail has advised customers that trains are now running on all routes. Passengers are warned to expect delays of up to 60 minutes.
Officers have confirmed that the man spotted on the track at Waterloo station bringing delays to services has been detained. A spokesman from British Transport Police said, "A man was detained under the Mental Health Act and taken to hospital for assessment."
There are still long delays at Waterloo Station this evening, after a man was seen on the tracks. The station came to a standstill during this evening's rush while British Transport Police led him off the line.
Power on - trains are now moving again from Waterloo. Bit worried now that our carriage is overweight - hope we are not stopped by police !
South West Trains has confirmed trains are now moving out of Waterloo, following a trespasser on the tracks - but the rail company is warning of major delays on all services until at least 10pm.
Wow..on my way to London Waterloo, this what London Waterloo currently looks like http://t.co/pf8Tb5awkm
Trains have started moving at Waterloo Station, but South West Trains has warned disruption will go on well into the evening: