A train at Blackheath was unable to open it's doors during rush hour.

There are currently delays going through the station due to the malfunction as the driver tried to fix the problem.

A man has taken to Twitter to say that his wife is currently stuck on the train with no way of getting off.

There are now fears for the safety of the people on the train.

National Rail has said that trains are likely to be cancelled and delayed at short notice until 8pm tonight. 

UPDATE - There was also a case of trespassers on the line at Blackheath, so trains are now on diversion and are being terminated before getting to their destinations. 

More information as we get it.