The celeb's application for a privacy injunction was initially turned down, but the Appeal Court ruled the information would be "devastating for the claimant".
The injunction means British media were banned revealing the celeb's name. All they could say was that he was an entertainer and married to "a well-known individual in the same business".
The Daily Mail reported his name was widely available across Twitter and Facebook, as social media users openly discussed the case.
It was also revealed the celeb was in an open relationship and occasionally had sexual encounters outside of the union.
- nzherald.co.nz