The owner of the equipment - BAA
From The Health & Safety at Work Act 1974
3 General duties of employers and self-employed to persons other than their
employees
(1) It shall be the duty of every employer to conduct his undertaking in
such a way as to ensure, so far as is reasonably practicable, that persons not
in his employment who may be affected thereby are not thereby exposed to risks
to their health or safety.