London Bridge was closed and cordoned off as police dealt with a suspicious package near to the famous landmark on 7 March.
The nearby bus, Tube and rail stations, and other surrounding buildings were evacuated as a precaution following the security alert.
No trains were stopping at London Bridge Station and the road was closed in both directions. Transport for London (TfL) are warning people to expect delays as a result of the disruption from the roads being closed off.
Southeastern have also warned to avoid Charing Cross, Cannon Street and Waterloo East as there are currently no services from these stations.
Police later confirmed that the alert, believed to have been triggered by a unattended vehicle, turned out not to be a threat.
A Met Police spokesperson said: "Thanks for bearing with us during the security alert on London Bridge St. Incident found not to be suspicious. Roads re-opening now."
Londoners took to social media to share images from the incident.