United Kingdom of Great Britain and Northern Ireland
Part 2 Arrest and delivery of persons
Supplementary provisions
24 Delivery up of persons subject to criminal proceedings, &c
Schedule 2 makes provision for cases where the Secretary of State receives a request from the ICC for the arrest and surrender, or provisional arrest, of a person—
(a) against whom criminal proceedings are pending or in progress before a national court, or who has been dealt with in such proceedings,
Complementarity
Person sought for different crime
Ne bis in idem - ICC
EDIT.