As with present day firearms legislation, including in Scotland Air Weapon legislation [Up here if you own an air "WEAPON" the owner of that / these weapons must have a License]
The horse has bolted, the Jennie is already out of the bottle in that there are several hundred large and millions of small "drone type" devices already in the hands of the public at large, most if not all of these devices are not traceable meaning any such minded individual can operate the device and disrupt an airport or other such sensitive establishment if that individual drone owner is minded to undertake such an act.
Present legislation "prevents" drone use within 1 K of an airport, this legislation only works if the public pay any heed to the legislation.
It appears from medial reports, because of recent events new legislation will be brought forward, to be ignored by some one wanting to jump on a band wagon of notoriety