Retreating from the current pan-European ratings PEGI, the UK government is set to introduce legally enforceable game ratings similar to those used for movies and other video content. Right now, only games with sex or "gross" violence are reviewed by the British Board of Film Classification (BBFC) and given a rating. The government is also encouraging parents to monitor their children's video game time and discouraging them from placing systems in bedrooms.
UK Ratings Get Bite
Legislation like this has been introduced in America repeatedly, but is consistently shut down for violating the 1st amendment. Luckily for the UK, they have no such codified constitution to hold them back.