A petition against the Esplanade finance centre development has been signed by more than 500 people, and a 'human-chain' protest is set to take place at the site next weekend.
Sean Power, one of the campaigners behind the protest, says those behind the development have underestimated the weight of public opinion against the plans:
Jersey's Treasury Minister says people will get straight answers. But he said details about UBS moving in were "commercially sensitive".
UBS has agreed to lease part of the controversial new development. Earlier this week an appeal against the planning consent was launched.