Rail passengers have taken to Twitter to vent their frustrations over delays at London Bridge station again.
A signalling problem is causing delays of up to 30 minutes to journeys to and from the station. There is no firm estimate yet of how long disruption will last but it is likely to continue until at least 6pm, says Network Rail.
Southeastern are currently not affected.
Nidhi tweeted: "Serious fed up of signalling issues at #LondonBridge. Sort it out guys" while Darren J wrote: "It's Monday. Of course #LondonBridge is 'experiencing delays'."
Thomas Withers directed his comment at Network Rail: "At what point do you admit chronic mismanagement of the #londonbridge situation? Do you realise the impact?"
The transport hub is undergoing at £6.5billion transformation to create more platforms, a new concourse on what is the fourth busiest station in the country, bringing in 50million passengers a year.