National Qualified Entry. An organisation given authority by the CAA to train pilots and pass them as qualified as part of the PfCO application process.

Notice to Air Men. A CAA issued time sensitive notice to all pilots to make them aware of unusual conditions or temporary hazards in the airspace.

Nautical Mile. Equivalent to one minute of latitude which is sometimes used as a measure of distance in aviation.

No Fly Zone - an area where flights are restricted or forbidden according to the law.

Line of Sight. A requirement of current UK law and this means that the pilot can see their aircraft with the naked eye while flying

National Endowment for Science, Technology and the Arts. Nesta is an innovation foundation, based in the UK and supported by a financial endowment. They carry out a lot of research into how drones can be used to meet the challenges of today's world.

Lithium Ion Polymer Battery. The most commonly used type of battery used in a drone because of the high transfer rate meaning extremely fast energy release is possible.

Light Detection and Ranging. This is a method of survey that measures the distance to a target by illuminating it with pulses of light and measuring the pulses that are reflected back. Common uses for LIDAR would be sea floor or forest mapping and it has recently found a use in precision agriculture.

Instrument Flight Rules. IFR means that a pilot can fly using just the data supplied by the aircraft's instruments, rather than using visual information. The other set of regulations are VFR (Visual Flight Rules)