(b) B undertook a day 2 test that generated a positive result.  (a) the end of the default self-isolation period;  (b) the day on which P receives the result of their day 8 test.  (a) until the end of the 10th day after the day P undertook the test;  (b) where P undertakes a test to which sub-paragraph (7) applies and the test generates a  negative result, until the later of—  (i) the end of the default self-isolation period,  (ii) the day on which P receives the negative result; or  (c) where P undertakes a test to which sub-paragraph (7) applies and the test generates a  positive result, until the end of the 10th day after the day P undertook the test.  (a) a day 8 test;  (b) a test—  (i) complying with the requirements for a day 8 test specified in paragraphs 8 and 9  (other than the requirement in paragraph 9(1)(e) that the test be administered or  provided to P no earlier than the end of the seventh day after the day on which P  arrived in England),  (ii) undertaken in the circumstances specified in paragraph 10 (other than the  circumstances in paragraph 10(2) about when a test must be undertaken), and  (iii) undertaken during the period specified in sub-paragraph (5)(a).  (a) is a non-Schedule 11 passenger who is required to comply with regulation 9, and  (b) undertakes a day 2 test which generates a negative or inconclusive result.  (a) P is a non-Schedule 11 passenger;  (b) P undertakes a day 2 test which generates a negative result;  (c) while P is self-isolating under these Regulations, P subsequently undertakes a test other  than in accordance with these Regulations; and  (d) P is notified that such test generates a positive result.  60 (4) Subject to paragraph 4, where P’s day 2 test and day 8 test both generate a negative result, P  must continue to self-isolate in accordance with the relevant self-isolation provisions until the later  of—  (5) Where a mandatory test undertaken by P generates an inconclusive result P must continue to  self-isolate in accordance with the relevant self-isolation provisions—  (6) Where sub-paragraph (5)(c) applies, P is not required to undertake a day 8 test in accordance  with regulation 6.  (7) This sub-paragraph applies to—  4. —(1) This paragraph applies where P—  (2) P may undertake a test in accordance with Schedule 10 (optional testing after arrival in  England), and, where the test generates a negative result, P ceases to be required to self-isolate  from the time that P is notified of that result.  (3) P must in any event undertake the day 8 test booked in accordance with regulation 6.  (4) Where P ceases to be required to self-isolate under these Regulations in accordance with  regulation 9(16), paragraph 3(1), (4) and (5) do not apply in relation to P’s day 8 test.  5. —(1) This paragraph applies where—  Tests other than in accordance with these Regulations  Optional tests 