The BBC and ITV, in fact most TV Stations have their own drone pilots, and a lot of them.
The Police, Fire, and other Emergency Services also use Drones, and have done for sometime.
As @MementoMori said, it stands out a mile that a drone has been used in a program.
There was one on last night with Christopher Timothy and Peter Davidson called “Vintage Roads Great & Small”, driving over Scotland, great program showing drone filming at some of it’s best.
In fact i would say that most outdoor documentaries use them these days.
Another one last night was “Great Railway Journeys” on BBC2 every night, including tonight.