Flights at London's Gatwick airport have resumed after a problem with the air traffic control system.
Planes were grounded for two hours causing delays for passengers.
The airport also diverted some inbound flights to other airports.
A Gatwick spokesperson said: "Due to an air traffic control systems issue in Gatwick's control tower, flights were suspended between 17.08 and 19.00.
Flights have resumed, but passengers are advised to check the status of their flight with their airline before travelling to the airport as we return to full operations."
People took to social media to say they had been left on the tarmac at airports not just in London, but elsewhere, as their planes remained grounded due to the disruption.
Gatwick is Britain's second busiest airport, behind London Heathrow.