This story is not about Big Brother.
So what picture did the Mail Use on it's homepage?
This one. Which is to do with Big Brother, as you can tell. A cycnical mind might think: "Hmm, Big Brother is quite a popular subject, and this story is tangentially related. Clicky clicky linky linky...." - Which would also go some way to explaining why the headline is also so vague if you don't know what the story's about.
I'll say it now: Daily Mail, you are a bunch of lazy clickbaiting turds. STOP IT YOU SHITBAGS.