Disruption occurred earlier as a Thameslink train had to be evacuated after a man douses himself in a liquid and threatened to set himself alight.
Fears about a "chemical spill" led to the evacuation of a train at Honor Oak Park travelling from Croydon into central London
There are cancellations and delays to trains between East Croydon and London Bridge on Sunday because BTP are responding to an incident. pic.twitter.com/RCAfxFrxON
— London 999 Feed (@999London) November 25, 2018
Passengers were evacuated onto the trackside near Honor Oak station.
The main was detained.
Trains are now running again.