Two separate appeals before the Supreme Court of Appeal were heard together because they raised the same constitutional issue. In the first appeal (Bull), the appellants were convicted in the Cape Provincial Division of multiple serious offences including murder, robbery, attempted robbery, and unlawful possession of firearms arising from an armed robbery at a bakery in Mitchell’s Plain in 1997. In the second appeal (Chavulla), five appellants were convicted in the Western Cape of multiple counts including housebreaking, robbery, murder, attempted murder, and firearm offences arising from a violent farm attack in Nieuwoudtville in 1996, as well as related offences committed earlier. In both matters, after conviction, the trial courts directed enquiries under section 286A(3) of the Criminal Procedure Act 51 of 1977. Following psychiatric evidence led by both the State and the defence, all appellants were declared dangerous criminals under sections 286A and 286B and sentenced to imprisonment for an indefinite period, with lengthy minimum periods set before reconsideration. The appellants appealed against sentence, challenging the constitutional validity of sections 286A and 286B.