TCTM02082 | Entitlement: Residence rules - Right to reside: Persons who have been granted exceptional leave or humanitarian leave or humanitarian protection
From HM Revenue & Customs · Tax Credits Technical Manual
Exceptional or Humanitarian grounds - Non European Economic Area (EEA) or Swiss nationals
Persons who have been granted exceptional leave or humanitarian leave or humanitarian protection have a right to reside in the United Kingdom for Child Tax Credit purposes.