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(b)  complies with the requirements of sub-paragraph (4) where relevant. 
(4)  The requirements of this sub-paragraph are that— 
(a)  in the case of a person who completed stage one— 
(i)  before 15th December 2020 and who is carrying out a test after 18th January 2021, 
(ii)  on or after 15th December 2020 and who is carrying out a test after whichever is the 
later of— 
(aa)  18th January 2021, and 
(bb)  the date four weeks after the date on which they completed stage one, 
they have complied with the requirements published by UKAS in relation to accreditation 
to that standard at http://www.ukas.com/C19-Stage2-UKAS-Appraisal (“stage two”), 
(b)  in the case of a person who completed stage two— 
(i)  on or before 18th January 2021 and who is carrying out a test on or after 1st July 
2021, 
(ii)  after 18th January 2021 and who is carrying out a t est on or after whichever is the 
later of— 
(aa)  1st July 2021, and 
(bb)  the date four months after the date on which they completed stage two, 
they are accredited by UKAS to that standard. 
Required circumstances for undertaking testing 
4.  The circumstances mentioned in paragraph 1 are that— 
(a)  P undertakes the test on or after the fifth day after the day on which P arrived in England; 
(b)  subject to sub-paragraphs (c) and (d), at the time the test is booked P notifies the test 
provider that P wishes to undertake the test for th e purposes of determining whether they 
may cease self-isolating under these Regulations, and provides the test provider with— 
(i)  their full name, 
(ii)  their sex, 
(iii)  their date of birth, 
(iv)  their NHS number (if known and applicable), 
(v)  their ethnicity,  
(vi)  their home address, and the address or addresses at  which they intend to self-isolate 
in accordance with regulation 9 while in England (if different), 
(vii)  the date of their arrival in the United Kingdom, 
(viii)  their coach number, flight number or vessel name (as appropriate), 
(ix)  the date on which they last departed from or transi ted through a category 2 country 
or territory, 
(x)  the country or territory they were travelling from when they arrived in the United 
Kingdom, and any country or territory they transited through as part of that journey, 
(xi)  their email address, 
(xii)  their telephone number, 
(xiii)  their passport number, or travel document reference number (as appropriate); 
(c)  where P is a child, or a person with a disability w ho is unable for that reason to provide 
the notification and information set out in paragraph (b) to the test provider— 
(i)  the notification and information set out in paragra ph (b), other than in paragraph 
(b)(xi) and (xii), is provided to the test provider  on P’s behalf by another person 
(“X”), and