I know two lots of Euromillions millionaire raffle winners, where the prize is £1m.
First was my ex-DPs mate, he found out on NYE, he and his wife and kids were on their arsebones, so it was a timely and welcome win. He bought them a house, cars, a boat, gave money to family and paid for a load of friends to go glamping / VIP at a music festival. He invited me and my then DP, was incredibly generous, but it started to get showy and vulgar, he literally wouldn't let anyone buy a drink all weekend, we'd already had him spend £1k on tickets and a tipi, he then asked me what band tee I wanted, I said I didn't want one thank you (I'd only met him once and didn't feel comfortable accepting gifts), but he went off and bought me merchandise anyway. He then spent the entire weekend hanging off of me and trying to hold my hand (bear in mind he was married and a friend of my BF), turned out he was off his face all weekend on three different drugs and ended up taking himself off to hospital on the last day due to the ill-effects.
A few months after the festival, he messaged me to see if I wanted a trip on his boat. I said I'd ask my BF, as he worked funny hours. He then replied, "No, just us two." Ewww! I declined.
I split with BF a short while later, we are friends still and went to a gig together a few weeks back. We talked about that festival and I asked whatever happened to his friend, he said he spunked all the remaining money on cocaine, got into debt with scary dealers and had to move away! I told him about his friend cracking on to me and he said he'd heard the same reports from other woman in their social circle. Poor wife eh?
The other winner was a syndicate at work. Split the £1m, got about £80k each, one person had left the syndicate a month before the win (gutted!) and two people left their jobs after they won.