Charge for day 2 tests and day 8 tests  SCHEDULE 9  Workforce tests  Interpretation of this Schedule  Regulation 7(5)  Requirement after failure to undertake test  Consequences of test results  12. —(1) The Secretary of State or a person designated by the Secretary of State may impose a  charge in respect of mandatory tests provided by a public provider.  (2) The Secretary of State—  1.  In this Schedule—  2. —(1) Sub-paragraph (2) applies where P fails to undertake a workforce test that P is required  by regulation 7 to undertake.  (2) Where this sub-paragraph applies, P must self-isolate in accordance with regulation 2 of the  Self-Isolation Regulations until the earlier of—  (3) P must comply with any applicable obligations in regulation 7(2) during any period that P is  required to self-isolate in accordance with sub-paragraph (2).  (4) Where P is required to self-isolate in accordance with sub-paragraph (2), regulation 2(2) of  the Self-Isolation Regulations (meaning of self-isolate) applies as if it also permitted P to leave the  place of self-isolation where necessary to undertake a workplace test.  3. —(1) Where a workforce test undertaken by P in accordance with regulation 7 generates a  positive result—  (2) Where sub-paragraph (1) applies—  67 (a) must publish details of the charges in such manner as the Secretary of State considers  appropriate; and  (b) may recover any sum owed by a person pursuant to such a charge as a debt.  (a) “P” means a person required to undertake workforce tests under regulation 7 (requirement  to undertake workforce tests);  (b) “workforce test” means any of the categories of workforce test described in regulation  7(6).  (a) the end of the 14th day after the day on which P arrived in England; or  (b) the time P obtains a negative result from a workforce test.  (a) P must as soon as reasonably practicable undertake a further test which complies with the  requirements for a day 2 test specified in paragraph 6 of Schedule 8 (mandatory testing  after arrival in England), in the circumstances specified in paragraph 10 of that Schedule  (other than the circumstances in paragraph 10(2) about when a test must be undertaken);  (b) P must self-isolate in accordance with regulation 2 of the Self-Isolation Regulations until  the end of the 10th day after the day P undertook the test.  (a) if the test taken by P was a workforce test undertaken for day 2, P is not required to  undertake a workforce test for day 5 or day 8;  (b) if the test undertaken by P was a workforce test undertaken for day 5, P is not required to  undertake a workforce test for day 8. 