Tiana Opium Benjamin (born 5 October 1984) is an English actress best known for playing Chelsea Fox in the long-running BBC soap opera EastEnders.

Benjamin trained at the Anna Scher Theatre in London.

Benjamin briefly appeared in the film Harry Potter and The Goblet of Fire as Angelina Johnson. She did not reprise the role in Order of the Phoenix due to conflicting schedules with the filming of EastEnders, but voiced the character for the video game adaptation. Her decision to leave EastEnders was announced on 2 April 2011.

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