Horne is best known as the star of the BAFTA Award-winning sitcom "Gavin and Stacey." Other credits include regular characters throughout "The Catherine Tate Show," the role of Jon Moss in the BBC film "Worried about the Boy" and the series "Horne and Corden." He previously appeared in the West End in a revival of Orton's Entertaining Mr. Sloane with Imelda Staunton.

In the play, "Charley's rich Aunt, Donna Lucia d’Alvadorez, is coming from Brazil and the timing couldn't be better.  Her presence as a chaperone will allow him and his friend Jack to ask their respective true loves, Amy and Kitty, for their hands in marriage.  But time is ticking, so where is Charley’s Aunt?  On learning she will be delayed by several days, they blackmail their eccentric friend Lord Fancourt Babberley (Horne) to save their romantic plans and pose as Donna Lucia -- and then Charley’s real Aunt arrives."

Asher, who will play Donna Lucia, recently filmed the comedy "I Give it a Year" and Stephen Poliakoff's new five-part drama "Dancing on the Edge" for BBC2. On stage, she appeared last year as Lady Bracknell in The Importance of Being Earnest in rep with Farewell to the Theatre (both directed by Stephen Unwin at The Rose Theatre, Kingston).  Other theatre credits include Festen (Almeida and Lyric Theatre), House & Garden (National) and Things We Do for Love (Gielgud).

Kelly, who will play Brassett, has been seen in Mike Leigh's Grief at the National Theatre and Wicked at the Apollo Victoria. TV credits include "Outnumbered," "EastEnders," "Boys from the Black Stuff," "Porridge" and "'Allo 'Allo’."

Pace, who will plays Spettigue, was last at the Chocolate Factory in the comedy Breakfast With Jonny Wilkinson. Other theatre credits include Donkey's Years (Comedy), Chicago (Adelphi) and Honk (National). He is best known as one half of the well-known comedy duo Hale and Pace. Charley's Aunt is directed by Ian Talbot, with sets and costumes by Paul Farnsworth and lighting by Jason Taylor.

Tickets are on sale to Chocolate Factory supporters now, and to the general public from July 11. To book tickets, contact the box office on 020 7378 1713 or visit www.menierchocolatefactory.com for more details.