Former 'X-Factor' judge was in court in London today (April 4)
Former 'X Factor' judge was first arrested in September 2015
Former 'X-Factor' judge was arrested on drugs charges before the trial collapsed
Pop star was originally convicted in July 2014
The singer says she "necked" painkillers and vodka while awaiting trial on drug charges
The N-Dubz singer was yesterday cleared of all charges as the high-profile case collapsed