A Gatwick spokeswoman has said the passengers involved in the emergency landing were being looked after in a specially set-up reception area at the airport.
Some incoming flights have been diverted, with some now landing at Stansted Airport in Essex instead.
The spokeswoman did not know how long it would take for the plane to be moved from the runway and normal take-offs and landings to resume.
More top news
Rain will push into the northwest, turning heavy and persistent in places
Thousands of dangerous appliances are still in use across the UK despite years of warnings about the dangers.
The US Navy says 10 sailors are missing and five are injured after the USS John S. McCain collided with a merchant ship near Singapore