Getting to the (Rock) bottom of this, the performer's response to seeing what he asserts are made up quotes on the Daily Star's front page was not to contact IPSO ... but to release a short video rebuttal through his social media platforms (specifically a video on his Instagram).
It's hard to argue against the notion that social media can be more effective than the formal regulator: Johnson's version is now very widely known, as opposed to a small correction buried somewhere inside months later.
