As the title, I’ve just read the “lucky” winner has come forward, so, we’re it you, would you go public and if so, why?
No, no and hell no, not a bloody chance. The first person I'd tell would be my legal advisor. Do I have a legal advisor? No. But I would have one if I won a lot of money. First priority. A lawyer I didn't know and didn't want to know, who wasn't my friend and wasn't pretending to be, a lawyer who'd openly say to my face that they were doing this work because they liked it, were very good at it and I was paying them a lot of money for it and they didn't give a damn about me, only about my money and the legal work itself.
I'd tell my family after I had their trust funds sorted out by that utterly mercenary lawyer. I'd tell my employer and coworkers after I'd bought my island and I wouldn't tell them where it was. I'd buy my coworkers major leaving presents to celebrate my escape, wads of cash maybe (I'd have my lawyer advise me on the most effective way to do it) but I wouldn't be there to give their presents to them. Where can my employer send any paperwork? To my lawyer. Where can anyone send anything? To my lawyer. How can you get a message to me? Through my lawyer. Where am I? No. How do you contact me? No. The answer is no. Whatever the question is, the answer is no. Does the answer have to make sense? You guessed it, no. The only people who would be able to contact me would be my lawyer and my immediate family.
The money itself would mostly be in low risk low return investments, probably government bonds for several very stable governments. Most of it would be tied up for who cares how long, providing me with a substantial income from money even I can't touch, just in case I make an utter pigs ear of being rich (as most lottery winners do - I'm not so very special that I think it couldn't happen to me). I'd keep a small proportion as waste money for whatever silly idea crosses my mind at any given instant. Yes, yes, I want to spend £500K digging an underground play room (well, hiring other people to do it) to put a racing simulator rig in it. Or whatever.
Go public? You'd have to pay me a lot more than any lottery win to persuade me to go public about my lottery win. And then I'd think about it and the answer would be, no surprises here, no.