TOP-secret pictures have captured Amazon’s covert aerial delivery drone tests.
Engineers donning orange hi-vis jackets were snapped testing the drones at a base in Cambridgeshire.
The photographs taken by the Mirror, captured its test programme that has been kept a secret since 2016.
The engineers were reportedly assessing safety concerns and trying to improve the drones battery life, the newspaper reported.
An expert said: “If you have to recharge them every other hour, then you need so many drones and you have to orchestrate that.”
The Civil Aviation Authority said Amazon has not yet applied for the drone technology to be approved.
Boss Jeff Bezos previously announced his plans to use drones to deliver packages in 30 minutes.
In 2013, he predicted drone deliveries as he said: I know this looks like science fiction, it’s not. Could it be four, five years? I think so.”
Drones have come under scrutiny following the travel chaos sparked at Heathrow last week and at Gatwick last month.
jaden gun snap
Murdered boy, 14, poses with handgun despite claims he had no gang links
Nurse reveals just how much she earns after putting her pay slip on Twitter
Mum let drug dealers rape girl, 3, for 13 years in return for drugs
Mums left in shock after finding ‘racist KKK’ toys inside Kinder Surprise Eggs
DIED A HERO
Ex-beauty queen killed when hit by 4×4 pushed girl, 6, out of way second before
Boris’s girl pinches his bum as they move in together and plan to go public
BEAST IS BACK
‘Beast from the East 2’ to bring heavy SNOW and freezing temperatures to UK
‘POISONED WITH BLEACH’
Mum ‘tried to kill her ill baby by pouring bleach in feeding tubes’
‘LET US IN’
Muslim family says hospital banned them seeing baby ‘because they look scary’
On Wednesday passengers reported seeing a police helicopter overhead while another told The Sun Online they were on the tarmac when the airport suspended all operations.
A video supposedly showing the drone over the area was obtained by The Sun Online.
We pay for your stories! Do you have a story for The Sun Online news team? Email us at email@example.com or call 0207 782 4368 . You can WhatsApp us on 07810 791 502. We pay for videos too. Click here to upload yours.