http://www.pcgamer.com/uk-gambling-commission-restates-that-loot-boxes-are-not-gambling/

The UK Gambling Commission has waded deeper into the increasingly murky waters of loot boxes in videogames with a blog post detailing its position on whether or not they constitute gambling, and what it can ultimately do about them. Interestingly, in contrast to recent opinions out of Europe and Australia, executive director Tim Miller said that under UK law, loot boxes do not qualify as gambling, and are thus not subject to regulation by the commission.

"Our starting point in deciding our position with any product is to look closely at whether or not it falls under UK gambling law. The definition of what is legally classed as gambling is set by Parliament rather than by us," Miller wrote. "Our role is to apply that definition to activities that we see and any changes to that definition need to be made by Parliament."