If you're a drone enthusiast living in the UK, heed this advice: Don't fly anywhere near land owned by the British Monarchy. Unmanned aerial vehicles (UAVs) are already banned from Royal Parks and now, a pilot has been told off for flying within 50 metres of Windsor Castle. The Queen was visiting the royal residence when a tourist flew his drone nearby, breaking rules set out by the Civil Aviation Authority. Police officers quickly stepped in and explained the legislation to the pilot -- the Metropolitan Police Service says "no further action" was necessary, but reports suggest he was also asked to delete his footage. As consumer drones become more prevalent, we suspect incidents like this will happen more often -- if you want to make sure you're never caught out, be sure to read our guide first.