21.—(1) A person who is—
(a)carrying out a critical function at a space site or spacecraft controller who is responsible for command and control of a launch vehicle or spacecraft for nominal operations, collision avoidance or anomalies, or
(b)employed by, or contracted to provide services to, a person who operates or maintains space situational awareness capabilities,
where they have travelled to the United Kingdom in the course of their work.
(2) For the purposes of sub-paragraph (1)—
(a)“space site” has the meaning given in paragraph 5(3) of Schedule 4 to the Space Industry Act 2018(1),
(b)“space situational awareness capabilities” means the sensors, systems and analytical services needed to provide time-sensitive warnings of space weather events, orbital collisions, orbital fragmentations or the re-entry of man-made objects from orbit,
(c)“spacecraft” has the meaning given in section 2(6) of the Space Industry Act 2018,
(d)“spacecraft controller” means a person competent, authorised and responsible for maintaining safe and secure operation of spacecraft through monitoring the status of a spacecraft, issuing manoeuvre commands or controlling other aspects of the spacecraft that influence its behaviour including its motion in space.