Britain already has some of the most liberal gaming laws in the world.

ECONOMIST: Gambling

Authorities have repeatedly tightened the city-state's tight casino-control laws, already among the strictest in the world, to restrict some locals from patronizing gaming floors and to punish casinos if they fail to keep problem gamblers away.

WSJ: Wealth Over the Edge | WSJ.Money Spring 2013

Three elements have to be present to violate most state gambling laws--namely "prize, chance and consideration, " says attorney Chuck Humphrey, a gaming-law specialist and author of the Gambling Law U.S. blog.

FORBES: A Legal Alternative To Online Gambling