Arterton, who was seen earlier in the year in the title role of The Duchess of Malfi that inaugurated the Sam Wanamaker Playhouse at Shakespeare's Globe, will appear next in the West End in Made in Dagenham, opening at the Adelphi Theatre in October. She made her professional stage debut at the Globe in 2007, fresh from RADA, when she played Rosaline in Love's Labour's Lost. Subsequent theatre roles have included Hilde Wangel in Ibsen's The Master Builder at the Almeida and Ellen in The Little Dog Laughed at the West End's Garrick. On TV she has played the title role of Tess in the BBC's "Tess of the D’Urbervilles." Film credits include the title role in "Tamara Drewe," "Quantum of Solace," "Prince of Persia: Sands of Time," "St. Trinian's," "The Disappearance of Alice Creed," "Hansel and Gretel" and "Runner Runner."

Mangan, who is currently appearing as Wooster in the West End run of Jeeves and Wooster in Perfect Nonsense through April 5, was previously in the last London revival of Alan Ayckbourn's The Norman Conquests at the Old Vic that subsequently transferred to Broadway's Circle in the Square. More recently he was seen at the Royal Court in Birthday and The People are Friendly. He is best known for roles including Guy Secretan in the television series "Green Wing," Dan Moody in "I'm Alan Partridge," Sean Lincoln in "Episodes" and holistic detective Dirk Gently in "Dirk Gently."

The voiceover will be provided by Julie Walters, last seen on the London stage in the National Theatre's premiere of The Last of the Hausmanns in 2012.

The set will be designed by Es Devlin, herself Olivier-nominated this year for her work on Chimerica that transferred from the Almeida to the West End's Harold Pinter Theatre. She designed the London 2012 Olympic Closing Ceremony and is currently represented in the West End by I Can’t Sing!

Further details of the U.K. and international line-up for the awards ceremony are to be announced shortly. For more details and full nominations, visit http://www.olivierawards.com.