I tend to agree with the BBC's have your say topic, with £45million is would most definitely emigrate. Other than that, I don't really know, berfore I go I might hire out alton towers forthe day so I could actually get on the rides for a change. I think I'd then spend the rest of my life skiing
I'd stop working for a start and travel the world.
Buy a nice modest size wooden oak framed house with a massive garage. Buy a load of cars to fill the massive garage (Aston Martin DBS, Vanquish S, V12 Vantage, Koenigsegg, Lambo, Maserati, TVR, Tiger Z100wr, Brabus Merc & many others) I'd keep the ST and mod it loads more.
Go on the Modball, Cannonball & Gumball rally.
Have monster home cinema set up at home. go-karting track, paintballing area, gym & sauna.
The rest I would give to charity, family & friends leaving enough for me to live on.