"Drone" can mean a number of objects, the dictionary definition is an "unpiloted aerial system (UAS or UAV) capable of autonomous flight". A drone can be a large, fixed-wing, military strike platform; or a small hobby quad-copter. We use the latter. Aviation regulatory bodies refer to drones as Remotely Piloted Aerial Systems (RPAS). As RPAS is not very catchy, nor recognised by the public, regulatory bodies often backtrack and conform to the word "Drone", such as in the Civil Aviation Authority's "Drone Code".
There is no such thing as a drone licence. An aerial licence implies there is a pilot inside the aircraft. Drones are operated from the ground, to use a drone commercially you need CAA permission to operate. To operate a drone as a hobbyist, simply following the CAA's Drone Code (on the links section). In addition, commercial drone operators are required to have insurance, have completed a drone course, and to be aware of other airspace users by NOTAMs (see link section). CAA approval allows drone operators to apply to fly in locations (like town centres) where hobbyists are not allowed. This does not mean that permission will be allowed, nor does it mean that operators have permission to fly within 50 metres of someone without their approval.
Drones are like motorbikes, some people misuse them, others enjoy them safely. Drones are definitely not bad, they are the future! If they are utilised correctly, they can give untold opportunities. If you have concerns that a drone is being misued, then report it.
If you believe a drone is within 50 metres of people or property without permission, then you can report it. If a drone is being flown over a town or settlement, it is likely that this is misuse. If a drone is being operated dangerously, such as chasing you, this is clearly misuse.
If you really have concerns that a drone is being used inappropriately, then you should report it to the National Air Traffic Services. The number to reports naughty drones is: 01489 616001.
The below points are not guidelines, but are legal regulations detailed in Civil Aviation Publication 393 Articles 94 & 95.
Photos are generally around 16 megapixel in size. Images are sharp and clear, the best conditions for good images are in direct light. Video quality is high definition, whilst advanced models can capture video in 4K. Note that only 4K TVs can benefit from 4K media.
Most drones have airports and airfields geofenced. That is, the drone will automatically stop if within three miles of an airport. It is against the Drone Code to fly near airfields. Legally drones cannot fly higher than 120 metres. Drones should not be flown near airports or aircraft, and if they are, the operator is 100% liable to criminal offences.