https://techcrunch.com/2018/05/31/uk-puts-legal-limits-on-drone-flight-heights-and-airport-no-fly-zones/

The UK has announced new stop-gap laws for drone operators restricting how high they can fly their craft — 400ft — and prohibiting the devices from being flown within 1km of an airport boundary. The measures will come into effect on July 30.

The government says the new rules are intended to enhance safety, including the safety of passengers of aircraft — given a year-on-year increase in reports of drone incidents involving aircraft. It says there were 93 such incidents reported in the country last year, up from 71 the year before.