Five male youths and a teenage girl pleaded not guilty to the murder David Morley on the South Bank last October when they appeared at the Old Bailey on Friday morning.
The six, who cannot be named, are due to stand trial on 3 October.
They also denied charges of conspiracy to rob and conspiracy to cause grievous bodily harm.
The charges relate to attacks on David Morley, 37, and a number of other people near Hungerford Bridge in October last year.
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