We've had this 'law' in place for a year or more now, they gave us a 'grace-period' in which to comply, It's ridiculous, it doesn't touch any of the real problems concerning privacy and is at best a pain in the rear, at worst, another example of laws created to affect the little people.
Thanks to Criteo, DoubleClick, AdRoll and the plethora of companies that set cookies in order to lurk just behind (or ahead) of the internet user, serving them targeted advertising based on their browsing behaviour, we now have this ridiculous situation in the UK.
Yet, because, in the main, they're not EU based, then their cookies can stalk a user with no consent.
Twitter have just implemented this stalking feature as well, no consent required, just an email informing the users that they will now be stalked.
Sometimes, I just shake my head.