The British Board of Film Classification has given Duke Nukem Forever an 18 rating. The classification board have said that the game contains scenes of strong violence, sex, nudity, language and drug references, but it was passed with no cuts made despite this.
The game also features 19m and 14s of cut-scenes. Having spent over a decade in development, Duke Nukem is set to return on May 6th in the UK.
Thanks to CVG for the info.