Whole of Gatwick south terminal is currently being evacuated.
A large part of the South Terminal has been evacuated as a precaution. Authorities are investigating a security incident.
Passengers will not be able to enter the South Terminal while this is ongoing.
The Airport said: “Safety and security of our passengers and staff remains our top priority. We are working hard to resolve the issue as quickly as possible.”
UPDATE 12:30 GMT
Arrivals are now regulated due to the security incident in London Gatwick. Heavy delays expected.
UPDATE 14:39 GMT
The earlier security alert has now been resolved and cleared by police. The South Terminal is reopening to staff and will be open to passengers shortly.