Two teenage brothers from New Addington are to stand trial for a double stabbing at the Whiftgift Centre.
The youths, aged 14 and 15, are each charged with two counts of causing grievous bodily harm in the attack on January 14.
Two boys, aged 16 and 17, were stabbed during a fight in the shopping centre at around 6pm.
The 17-year-old suffered a knife wound to his lower back and a punctured kidney, while the younger boy was slashed in the cheek and stabbed in the arm.
The two brothers boys, who deny the charges, will stand trial at Croydon Crown Court on June 30.