Michael Coombs, known as rapper Mike GLC, has pleaded guilty at Southwark Crown Court to supplying cocaine to an undercover reporter from the Sun on Sunday.
Former X Factor judge Tulisa Contostavlos, who is due to stand trial, denies being concerned in brokering the drug deal.
More top news
A group of hooded youths have clashed with police in Paris at a May Day rally against proposed labour reforms.
Tonight a band of cloud and rain will spread into Scotland and Northern Ireland before reaching all parts of the country tomorrow.
Baronness Warsi has hit out at her own party's London mayoral campaign, suggesting it may destroy any prospect of winning.