This is one of the luckiest people in the world now,imagine because of being Bored and wanted to enjoy the day?he become a Millionaire(if converted to asian money ) and the way i see this is the Man is not that gambling addicted so the way He decide seems very understandable .
When he says Quitting about gambling?this is one good thing to prove he can control himself and good example how gamblers must behave.
I read a few days ago about the Euromillions dude who won 58million and his account is flooded with hot girls trying to get his attention.
Like you said, convert 400 GBP to Asian money and he's powerful. Deposit for house? He can buy 2 or 3 houses paid in full with the same deposit here next to a beach and nice view. How lucky!