Singer Tulisa Contostavlos is due to appear in court charged in connection with the supply of Class A drugs in London.
The Crown Prosecution Service (CPS) announced last week that it had authorised the Metropolitan Police to charge the former X Factor judge with ''being concerned in'' the supply of Class A drugs.
She is due to appear at Westminster Magistrates Court in central London.
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Before the final declaration on Friday, the Conservative candidate looked set to lose the City Hall race to Labour's Sadiq Khan.
The Tooting MP has been the frontrunner in the counting process ahead of Tory challenger Zac Goldsmith.
It's not just London where elections have been taking place today. There were council elections taking place across the home counties.