Parliament of the United Kingdom, Homicide Act 1957 (1957)
“ Where sentence of death is passed on a person convicted of two murders tried together, it shall be treated as passed in respect of each of the convictions; but if one of the convictions is and the other is not set aside on appeal, the court deciding the appeal, unless satisfied that the sentence remains warranted in law in respect of the other conviction, shall set the sentence aside and pass the appropriate sentence in substitution for it. ”
