39 
15.  Operational, rail maintenance, safety and security  workers working on the tunnel system 
who have travelled to the United Kingdom in the course of their work. 
16. —(1) Any person who the relevant Department has cer tified as meeting the description in 
sub-paragraph (a), (b) or (c)— 
(a)  a Crown servant or government contractor who is required to undertake essential policing 
or essential government work in the United Kingdom within the period during which they 
would, but for this paragraph, have had to self-isolate in accordance with regulation 9; 
(b)  a person returning from conducting essential state business outside of the United 
Kingdom; 
(c)  a person returning to the United Kingdom where this  is necessary to facilitate the 
functioning of a diplomatic mission or consular pos t of Her Majesty or of a military or 
other official posting on behalf of Her Majesty. 
(2)  For the purposes of sub-paragraph (1)— 
(a)  “consular post” means any consulate-general, consul ate, vice-consulate or consular 
agency; 
(b)  “Crown servant” has the meaning given in section 12 (1)(a) to (e) of the Official Secrets 
Act 1989(a); 
(c)  “essential government work” means work which has be en designated as such by the 
relevant Department, and includes, in particular, w ork related to national security, the 
work of the National Crime Agency in pursuance of i ts statutory functions, and work 
related to immigration, the coronavirus disease or any other crisis response, but does not 
include work of the description in paragraph 2 of t his Schedule (essential work related to 
the United Kingdom border); 
(d)  “essential policing” means policing which has been designated as such on behalf of the 
relevant chief officer or chief constable; 
(e)  “essential state business” means activity which has  been designated as essential to the 
United Kingdom or Her Majesty’s Government by the relevant Department, and includes, 
in particular, bilateral or multilateral discussion s with another state or international 
organisation and visits to another state on behalf of the United Kingdom or Her Majesty’s 
Government; 
(f)  “government contractor” has the meaning given in se ction 12(2) of the Official Secrets 
Act 1989. 
17. —(1) A person returning from undertaking essential or emergency work outside of the 
United Kingdom, which has been certified by the rel evant Department as necessary to facilitate 
essential government work or essential state business. 
(2)  For the purposes of sub-paragraph (1) “essential go vernment work” and “essential state 
business” have the same meaning as in paragraph 16. 
18.  A person designated by the relevant Minister under  section 5(3) of the Repatriation of 
Prisoners Act 1984(b). 
19.  A person responsible for escorting a person sought  for extradition pursuant to a warrant 
issued under Part 3 of the Extradition Act 2003( c) or sought for extradition pursuant to any other 
extradition arrangements. 
20.  A representative of any territory travelling to th e United Kingdom in order to take into 
custody a person whose surrender has been ordered p ursuant to any provision of the Extradition 
Act 2003. 
                                                                                                                                            
(a) 1989 c. 6. 
(b) 1984 c. 47. 
(c) 2003 c. 41.