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The Old Vic has announced the initial participants for its fifth annual The 24 Hour Plays Celebrity Gala, which will take place at 7:30pm on Sunday, November 30, The event will be co-hosted this year by radio DJ and TV presenter Johnnie Vaughan and actor James Corden. All proceeds from the event support Old Vic New Voices, part of the theater's commitment to nurturing new talent, developing new work, attracting new audiences, and engaging the local community.

Celebrity participants will include Jenny Agutter, Hugh Bonneville, Hamish Clark, Julia Davis, Martin Freeman, Henry Goodman, David Harewood, Josh Hartnett, Jessica Hynes, Jenny Jules, Dervla Kirwan, Martina Laird, Sally Phillips, Tim Pigott-Smith, Michelle Ryan, and Lia Williams.

The actors will be joined in this year's challenge by directors Tamara Harvey, Clare Lizzimore, Anna Mackmin, Jonathan Munby and Josie Rourke, and writers Amelia Bullmore, Moira Buffini, Maurice Gran, and Laurence Marks.

For more information, visit www.whatsonstage.com.