Zaha Hadid Architects made the decision to follow Foster + Partners in leaving Architects Declare, which was founded in 2019, due to "a significant difference of opinion" with the steering group that leads it.
"Regrettably, we are withdrawing from Architects Declare," said a statement from Zaha Hadid Architects.
"As a founding signatory, we agreed to continue and accelerate our work towards progressive change in our built environment," it continued.
"However, today we need to recognise that we have a significant difference of opinion with the Architects Declare steering group on how positive change can be delivered."