Drones come in different types and sizes. Anyone can buy a small one and fly it around their garden for fun. But to fly a commercial drone – bigger versions that fly faster, higher and longer and carry high-resolution video cameras – you’ll need a licence. They are, after all, small aircraft and can cause damage or injure people and animals when they crash, not to mention the dangers of invading the flight paths of passenger jets at take-off and landing. You need to know where and when you are allowed to fly a commercial drone to avoid trouble with the law.