United Kingdom of Great Britain and Northern Ireland
Medical witnesses and post-mortem examinations etc.
23 Exhumation of body for examination.
(1) A coroner may order the exhumation of the body of a person buried within his district
where it appears to him that it is necessary for the body to be examined—
(a) for the purpose of his holding an inquest into that person's death or discharging any other function of his in relation to the body or the death; or
(b) for the purposes of any criminal proceedings which have been instituted or are contemplated in respect of the death of that person or of some other person who came by his death in circumstances connected with the death of the person whose body is needed for examination.
(2) The power of a coroner under this section shall be exercisable by warrant under his hand.
(3) No body shall be ordered by a coroner to be exhumed except under this section.
Other forms of cooperation
Identification and whereabouts of persons - national procedures for ICC proceedings
Other types of assistance - national procedures for ICC proceedings
EDIT.