(viii) paragraph 25 (chemical weapons inspectors),  (ix) paragraph 26 (space workers),  (x) paragraph 28 (oil workers),  (xi) paragraph 29 (offshore oil and gas workers) unless paragraph (4) applies to the  person,  (xii) paragraph 31 (specialist technical workers),  (xiii) paragraph 32 (specialist waste management workers),  (xiv) paragraph 35 (medicines inspectors),  (xv) paragraph 36 (clinical trial conductors),  (xvi) paragraph 37 (clinical investigators),  (xvii) paragraph 38 (medical and veterinary specialists),  (xviii) paragraph 39 (infrastructure workers), or  (xix) paragraph 40 (communications operation workers).  (a) paragraph 2 (UK officials with border security duties);  (b) paragraph 3 (officials involved in essential defence activities);  (c) paragraph 6 (seamen and masters) other than seamen and masters of fishing vessels  within the meaning of the Merchant Shipping Act 1995( a );  (d) paragraph 7 (pilots);  (e) paragraph 8 (inspectors and surveyors of ships);  (f) paragraph 9 (aircraft crew and pilots);  (g) paragraph 10 (international rail crew, passenger and freight operators);  (h) paragraph 13 (road haulage workers);  (i) paragraph 15 (Channel Tunnel system workers);  (j) paragraph 18 (repatriated prisoners);  (k) paragraph 19 (international prison escorts);  (l) paragraph 27 (aerospace engineers and aerospace workers);  (m) paragraph 34 (persons transporting human blood etc.); or  (n) paragraph 43 (seasonal agricultural workers).  (2) In paragraph (1)(b), the reference to persons required to self-isolate under regulation 9 does  not include anyone who may temporarily cease to self-isolate by virtue of regulation 9(15)(f)(ii),  (15)(g)(ii), or (15)(i) (and accordingly regulation 6 does not apply to such persons).  (3) Regulation 7 (requirement to undertake workforce tests) applies to a person who is not  required to self-isolate under regulation 9 by virtue of any sub-paragraph of regulation 9(15) and  the following paragraphs of Schedule 4, or who may temporarily cease to self-isolate or whose  obligation to self-isolate under that regulation is otherwise modified by virtue of those  provisions—  (4) Regulation 7 also applies to a category 1 arrival who would have been a person to whom  paragraph (3) applied if that person had arrived from a category 2 country or territory.  (5) Regulation 8 (test requirements: offshore installation workers) applies to a worker who falls  within the description in paragraph 29(1)(a) of Schedule 4 who arrives in England and is required  to undertake or commence activities on an offshore installation, including critical safety work on  an offshore installation.  ( a ) 1995 c. 21.  8