And that, only if you are still on the SOR or subject to other conditions.

Once you are off the SOR and have no more SOPOs/SHPOs etc. then unless otherwise informed, you have no obligation whatsoever to tell the police anything, whether that's changing your name, travelling abroad, having a child, getting a new passport, whatever.

Just change your name to something very common. I doubt they will catch on. I suspect many cases are not accurately reported anyway, it wasn't in my partners case, and obviously to his detriment. Then these sites plagiarise the content from papers, but it would be up to the paper to make a complaint to get the article withdrawn, and they don't care. Even national papers violate copyright by using images they have no right to use from the internet. Sadly IPSO (which is a sham) cites a public interest defence. I don't believe there is such a defense for photographs in the UK.  I'd argue these sites actually endanger people, as it makes it harder for people to move on with their lives, and people not working etc are more likely to reoffend. That's surely not good for society. Many comments on some sites are undoubtedly illegal, but there just isn't the public sympathy to prosecute such wrong doings. But also the fear of attracting more publicity deters people. The whole area urgently needs looking at.