Imagine the scenario however you like but the crux is- you've just won twenty million pounds. AIBU to ask you what you would spend the money on or do?
Let's indulge ourselves on this dreary Sunday! 
By the way I haven't won even a penny, just fantasising!
After paying off bits and pieces I'd like to move house somewhere more rural and set up a dog shelter. It would need to be rural because of all the barking.
Also I'd have a personal gym. And maybe study something for pleasure.
Now you!