London's Heathrow, the world's second busiest airport, has been forced to stop departing flights after a drone was sighted near the airfield.
The airport tweeted that it was "responding to a drone sighting at Heathrow" and said it was "working closely with the Met Police to prevent any threat to operational safety".
This fresh drone drama comes weeks after London's Gatwick airport was shut down for 36 hours by reports of drones flying in the area.
Second major UK airport thwarted by drones
Heathrow is one of the busiest airports in the world, second only to Dubai international airport, with 75 million passengers flying each year. Drone disruption could potentially effect hundreds of passengers.

We are responding to a drone sighting at Heathrow and are working closely with the Met Police to prevent any threat to operational safety. As a precautionary measure, we have stopped departures while we investigate. We apologise to passengers for any inconvenience this may cause. ? Heathrow Airport (@HeathrowAirport) January 8, 2019

The part closure of Heathrow happened the day after the UK government announced the testing of new anti-drone technology to help avoid a repeat of the Gatwick drone incident.
Transport secretary Chris Grayling has promised to extend drone exclusion zones to 5,000 metres around UK airports. Police have been given new powers to seize suspicious drones and access people's data when a serious offence has been committed.
Gatwick drone mys...