But Acoba's chair says he doesn't believe the ex-health secretary should be punished for the breach.
The sudden announcement was made just before N-Dubz were due to take to the stage on Tuesday.
Videos showed workers marching, with some confronted by people in hazmat suits and riot police.
The Booker-nominated novel, which developed a huge young fanbase, is coming to London's West End.
The former football star is currently presenting the broadcaster's World Cup coverage from Qatar.
South African software developers discuss what it means to them to do business in the country.
FTX's collapse was described in court as "one of most abrupt and difficult" in corporate America.
Activists Louis McKechnie and Emily Brocklebank glued themselves to Peach Trees In Blossom.
The presenter has gone viral on TikTok talking about his experience following a high-speed car crash in 2006.
Meta's independent appeals body criticises the decision to remove the video and says it must be reinstated.