I know public reporting says US is behind Russia in EW. I don't know how good UK EW is, but if the UK can't locate commercial drones signals, than we are in trouble.

(Fun fact, UK was very good in EW during WWII

https://en.wikipedia.org/wiki/Battle_of_the_Beams )

Military perspective on this:

http://www.thedrive.com/the-war-zone/25608/rogue-drones-have...