The suspension of takeoffs from Heathrow, one of the world's busiest airports, was announced shortly before 6 p.m. on Tuesday, a move the airport said was made as a safety precaution.
An aerial view of London Heathrow Airport in 2016.
A third wrote: "Grounded at #Heathrow whilst waiting to fly home to Manchester, first officer says flights suspended whilst police investigate possible #drone activity".
Outgoing flights were briefly grounded at Britain's largest airport, London Heathrow, following reports of a drone sighting.
Flights resumed after about an hour, Heathrow said.
While another, said: 'Sitting on a plane at Heathrow.
Today, the British government announced a package of measures created to give police extra powers to combat drones.
Transport Minister Chris Grayling had been in contact with the airport concerning the drone sighting.
Heathrow and Gatwick responded by ordering military-grade anti-drone defenses worth "several million pounds". Plane not going anywhere due to drones'.
Locals now get half a day's respite from noise when take-offs and landings switch to the opposite runway at 3pm, but Hacan claims this would be reduced to one third of a day.
Past anti-drone measures included the creation of a competency test for pilots, and this is set to come into force from November of this year, as anyone owning a drone weighing more than 250g will be required to register it and prove they can handle it.
Police will also be allowed to fine users up to £100 (112 euros, $128) for failing to comply when instructed to land a drone, or not showing registration to operate a drone.