text: (a) the person requires leave to enter or remain in the United Kingdom; 
  (b) an immigration officer suspects the person has— 
  
  (i) evaded, or attempted to evade, immigration control, or 
  (ii) been arrested, detained or granted immigration bail by an immigration officer in 
  
  accordance with the Immigration Acts; 
  
  (c) the person fails to produce valid notification of a negative result from a qualifying test 
  
  when requested to do so by an immigration officer; and 
  
  (d) the immigration office requires the person to undertake such a test. 
  
  (6) The following persons are not required to comply with this regulation— 
  
  (a) a child who is under the age of 11; 
  (b) a person described in paragraph 2, 3, 4, 6, 7, 8, 9, 10, 13, 14, 15 or 34 of Schedule 4 