United Kingdom of Great Britain and Northern Ireland
Part 2 Arrest and delivery of persons
Proceedings on request
5 Proceedings for delivery order
(4) In the case of a person alleged to have committed an ICC crime, the competent court may adjourn the proceedings pending the outcome of any challenge before the ICC to the admissibility of the case or to the jurisdiction of the ICC.
Admissibility challenge
Postponement - admissibility challenge
EDIT.