Truthfully, it will be extremely unlikely your application will be unsuccessful. On more than one occasion you have shown poor judgement ie drink driving and assault. END OF STORY. The police are not going to be interested in debating whether you have changed your life, whether you were provoked, whether if was a few years ago, they are not going to be able to monitor your future conduct they can only judge you on your history.
Put yourself in there shoes if you got bevvied behind the wheel with your shotgun in the back, the press would have a total field day!
That said one day the impo