A spokesperson for the Barbican said:

“Last night as Exhibit B was opening at the Vaults it became impossible for us to continue with the show because of the extreme nature of the protest and the serious threat to the safety of performers, audiences and staff. Given that protests are scheduled for future performances of Exhibit B we have had no choice but to cancel all performances of the piece. 

“We find it profoundly troubling that such methods have been used to silence artists and performers and that audiences have been denied the opportunity to see this important work. Exhibit B raises, in a serious and responsible manner, issues about racism; it has previously been shown in 12 cities, involved 150 performers and been seen by around 25,000 people with the responses from participants, audiences and critics alike being overwhelmingly positive. 

“The Barbican has done everything we can to ensure London performances can go ahead – including continued dialogue with protestors and senior Barbican staff meeting with the leaders of the campaign and attending a public meeting to discuss the issues raised by the work. We respect people's right to protest but are disappointed that this was not done in a peaceful way as had been previously promised by campaigners . 

“We believe this piece should be shown in London and are disturbed at the potential implications this silencing of artists and performers has for freedom of expression.”