United Kingdom of Great Britain and Northern Ireland
PART 1
OFFENCES
3 Trial and punishment of main offences
(4) A person convicted of—
an offence involving murder ; or
an offence ancillary to an offence involving murder,
shall be dealt with as for an offence of murder or, as the case maybe, the corresponding ancillary offence in relation to murder.
National penalties - genocide
National penalties - crimes against humanity
National penalties - war crimes
EDIT.