From the ANO - CAP393; a tenuous reference to the Darwinian spectators under the flight path:
Air Navigation: The Order and the Regulations
Published for the use of those concerned with air navigation,but not to be treated as authoritative (see Foreword)
FOREWORD
1 Status
1.1 This work sets out the provisions of the Air Navigation Order as amended together with Regulations made under the Order. These Regulations are The Rules of the Air Regulations,The Air Navigation (General) Regulations, the Air Navigation (Cosmic Radiation)(Keeping of Records) Regulations, the Air Navigation (Dangerous Goods) Regulations and a number of permanent Air Navigation (Restriction of Flying) Regulations. It also contains the provisions of the Civil Aviation Authority Regulations. As with the Air Navigation Order itself, the Regulations are in their currently amended form.
1.2 It has been prepared for those concerned with day to day matters relating to Air Navigation who require an up to date version of the Orders and the Regulations mentioned above. It is edited by the Legal Adviser’s Department of the Civil Aviation Authority. Courts of Law will however refer only to the Queen’s Printer’s Edition of Statutory Instruments.
PART 19 Prohibited Behaviour
Endangering safety of an aircraft
137 A person must not recklessly or negligently act in a manner likely to endanger an aircraft, or any person in an aircraft.
Endangering safety of any person orproperty
138 A person must not recklessly or negligently cause or permit an aircraft to endanger any person or property.
So it works both ways...
Mister B