The list for the proposed August event was first spotted by a hacktivist who posted the information online. American platform Wired acquired documents belonging to Dialog last month, including a list of members.

Powerscourt Estate, which is a separate business from the Hotel and Spa said it was “relieved and pleased” that the Dialog event would not take place.

“Following a period of great concern for Powerscourt Estate and on foot of discussions with The Powerscourt Hotel, we are relieved and pleased to announce the Dialog event planned for August at the Powerscourt Hotel has been cancelled,” a spokesperson said.

It thanked its staff, neighbours, supporters and legal team for their backing “through this difficult and challenging time”.