Photo Flash: In Rehearsal with the New Cast of West End's MAMMA MIA! - Alice Stokoe, Rebecca Lock & More!

Following the recent 15th birthday celebrations for Mamma Mia! in London, there will be major cast changes from Monday 9 June 2014. Rebecca Lock will be joining the cast as Rosie, Alasdair Harvey as Harry, Charles Daish as Bill and Alice Stokoe as Sophie Sheridan and Lloyd Green as Sky. Also joining the cast from 9 June will be Rosanna Bates as Ali, Brodie McBride as Lisa, James Alexander Gibbs as Pepper and James Evans as Eddie. Dianne Pilkington will continue to star as Donna Sheridan, with Kim Ismay as Tanya and Richard Trinder as Sam. At certain performances, the role of Donna Sheridan will be played by Shona White. Below, check out photos from the new cast in rehearsal!

Rebecca Lock's previous West End credits include The Phantom of the Opera, Avenue Q and Mary Poppins. Alasdair Harvey is currently playing the role of Khashoggi in We Will Rock You. Other recent credits include Forbidden Broadway and Sunday in the Park with George, both for the Menier Chocolate Factory. Charles Daish's recent London theatre credits include Race at Hampstead Theatre and A Streetcar Named Desire at the Donmar Warehouse. Alice Stokoe will be making her West End debut and Lloyd Green his professional debut.

MAMMA MIA! is Judy Craymer's ingenious vision of staging the story-telling magic of ABBA's timeless songs with an enchanting tale of family and friendship unfolding on a Greek island paradise. To date, it has been seen by more than 54 million people in 39 productions in 14 different languages grossing more than $2 billion at the box office.

Produced by Judy Craymer, Mamma Mia! The Movie, starring Meryl Streep and Pierce Brosnan, is the highest grossing live action musical film of all time.

MAMMA MIA! originally opened in London at the Prince Edward Theatre on 6 April 1999, before transferring to the Prince of Wales Theatre in 2004. The musical re-opened at the Novello Theatre in 2012.

From West End to global phenomenon, the London production of Mamma Mia! has been seen by more than 10% of the entire UK population. The show has celebrated over 6,300 performances in London and has broken box office records in all three of its London homes. In 2011, it became the first Western musical ever to be staged in Mandarin in the People's Republic of China. This summer, the Mamma Mia! International Tour will play an exclusive UK Summer Season at the Blackpool Opera House from 20 June to 14 September 2014. Blackpool will be the only UK venue outside of London to host the worldwide hit musical this year.

With music & lyrics by Benny Andersson & Björn Ulvaeus, Mamma Mia! is written by Catherine Johnson, directed by Phyllida Lloyd and choreographed by Anthony Van Laast. The production is designed by Mark Thompson, with lighting design by Howard Harrison, sound design by Andrew Bruce & Bobby Aitken, and musical supervision, additional material & arrangements by Martin Koch.

Photos by Matt Crockett