Unidentified drones have been spotted flying over three bases used by the United States Air Force in Britain, the two countries have confirmed.

The United States Air Force said that a number of small unidentified drones were detected around three airbases in the United Kingdom over the past week. The US Air Forces in Europe said "small unmanned aerial systems" were seen over Royal Air Force Lakenheath,

Unidentified drones have been spotted over three US airbases in Britain, the United States Air Force (USAF) has confirmed. The sightings between 20 and 22 November were of a number of “small unmanned aerial systems” over RAF Lakenheath and RAF Mildenhall, in Suffolk, and RAF Feltwell, in Norfolk.

A number of unidentified drones have been spotted over three airbases in Britain, the United States Air Force (USAF) has confirmed.The incidents, which occurred between Wednesday and Friday, saw "small unmanned aerial systems" spotted over RAF Lakenheath and RAF Mildenhall,

A SWARM of unidentified droneshave been spotted flying over three separate RAF airbases, the US Air Force has said. The fleet of “unmanned aerial devices” were seen over a £40m RAF

A spokesperson for the United States Air Force said in a statement following the incursions that the drones "fluctuated and they ranged in size [and] configuration"

The incidents saw "small unmanned aerial systems" spotted over RAF Lakenheath and RAF Mildenhall, in Suffolk, and RAF Feltwell, in Norfolk, according to the United States Air Force (USAF)

The British Ministry of Defence is taking the ‘threat seriously’ after a number of unidentified drones were spotted over three US airbases in Britain. “Small unmanned aerial systems” were spotted over RAF Lakenheath and RAF Mildenhall, in Suffolk, and RAF Feltwell, in Norfolk between November 20 and 22.