(1)Proceedings may not be brought under section 66 alleging that a person has acted unlawfully by virtue of section 52 if the question of the lawfulness of the act could be raised (and has not been raised) in immigration proceedings (disregarding the possibility of proceedings brought out of time with permission).
(2)If in immigration proceedings a court or tribunal has found that an act was unlawful by virtue of section 52, a court hearing proceedings under section 66 shall accept that finding.
(3)In this section “immigration proceedings” means proceedings under or by virtue of—
(a)the Immigration Acts, or
(b)the Special Immigration Appeals Commission Act 1997 (c. 68).