I keep seeing comparisons of the two, and I think they are misleading. Camilla Batmanghelidjh is as mad as a box of frogs, a total narcissist, and racist to boot, but I have never seen any evidence that she wasn't genuine in her original intention of helping deprived kids. KC was a charity with a laudable mission, which it totally failed to deliver because of its crazy methods and abysmal management.
Mermaids, meanwhile, seems to be quite well-run from a management point of view, and very successful at delivering its objectives. But it's far more sinister than KC because its mission is to encourage kids to undergo harmful treatments that leave them infertile, incapable of sexual function and medicalised for life. It would be better for all concerned if Mermaids were as chaotic and clueless as KC, but it isn't. And if is far, far more embedded in institutions and the Establishment than KC ever was.
The only thing the two really have in common is the support of a bunch of witless celebrities.
I don't like the comparison, because it underplays the sinister nature of Mermaids' mission. Camilla B got let off with a slap on the wrist. Mermaids needs to be held to account for all the kids whose lives have been irrevocably damaged.