Singer Tulisa Contostavlos and rapper Mike GLC, also known as Michael Coombs, will next appear at Southwark Crown Court in central London on January 9.
Both the N-Dubz star and Coombs have denied drugs charges.
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The book by Cameron comms chief Sir Craig Oliver reveals that Mr Cameron was frustrated with Theresa May's neutrality during referendum.
Cloud and outbreaks of rain will ease away eastwards during the morning, clearing the east coast around midday with sunny spells developing.
Police and emergency services are attending the scene.