4. You must not endanger uninvolved people or their property

You must not endanger the safety of any uninvolved person or any vessel, vehicle or structure not under your control when you fly your unmanned aircraft and you must always maintain a safe distance.

For aircraft fitted with cameras, you must not fly within 150ft (50m) of any uninvolved person (reduced to 30m for take-off/landing) or any vessel, vehicle or structure not under your control and you must not fly over or within 500ft (150m) of any congested area or an organised open-air assembly of more than 1,000 persons.