Let's pretend he has got 14 million how can he spend it?
Could he go to an estate agent and buy a house, could he go to the Ferrari dealership or has he got to but small-ish items like the poster above who bought a gaming PC?
Can anybody link to a boys toys site that will take your bitcoins?
First, you test whether you can actually access the funds. Take a couple of thousand, spend it, check all looks well.
Secondly, get to a country with low capital gains tax and no extradition treaty.
Thirdly, start transferring the funds out bit by bit and to multiple different bank accounts...
Actually, I find this a more fun game. Forget what you'd spend it on. How would you handle it if you actually found yourself in possession of £14million pound from an unknown source? How would you make sure you didn't lose it?