Also take a look at the new Drone Code - all drone flyers should read this carefully and note the differences from the previous code.
Find out about height limits and distances from people, buildings, crowds and vehicles. Restrictions on flying drones and model aircraft near airports.
register-drones.caa.co.uk
Small drones and model aircraft: below 250g, C0 or C1 class
If you’re flying a drone or model aircraft that’s lighter than 250g or is C0 class, you can fly closer to people than 50m and you can fly over them.
When you’re thinking about how close you can fly, remember, you must never put people in danger. Even small drones and model aircraft could injure people if you don’t fly them safely.
You can fly small drones and model aircraft that are lighter than 250g, or C0 or C1 class, in residential, recreational, commercial and industrial areas.