I could not possibly think of anything on which I could possibly spend �15 million which would materially increase my current health or happiness. (And I'm certainly not a very wealthy person).
I would like to keep a couple of million quid back for myself but if I wasn't allowed to do this, then I'd have to set up some kind of charitable foundation which allowed the income to be distributed to worthy causes of my own choosing.
A whole housing estate in Florida, near Kissimmee, one I would keep for myself and family (or maybe two then we can have lots of people out on holiday at the same time) and rent the others out as holiday homes thereby creating income for me.
I would buy 46,875,000 1st class stamps and sell them at a small loss of 1p per stamp. I would then have �14,531,250 to spend on what ever i wanted.( or i could keep them untill the next royal mail 2p price increase and sell them at a small pofit of �937,500)
New house, new houses for the family. Invest a bit. Use the rest to set up, a) an alternative school (like Summerhill) with plenty of assisted places, and b) a charity for ex-drug addicts to help them get training and support.
i think it would have to be a yacht then i could charter it when not uesing it and sail around the carribean when i fancied it
hmmm nice to dream isnt it
Shares in a massive company like Microsoft. You'll get the dividends to increase your current income and standard of living and at some point later you can flog them and be obscenely rich and spend your money as you see fit without that pesky frogoo's daft rules. lol