It’s all change at the Novello Theatre in London as blockbuster ABBA musical Mamma Mia! has announced a new cast.
The casting announcement means that current star of the show Mazz Murray, who plays Donna Sheridan, will be leaving on 4 October 2025.
Mamma Mia! has also announced that it is extending at the Novello Theatre, and will now be booking until 26 September 2026.
The new cast of Mamma Mia! starts on 6 October 2025 and will include Sara Poyzer as Donna. Sara previously played Donna in Mamma Mia! for over 12 years in the West End and on tour. Her other credits include Come From Away and Billy Elliot The Musical on stage, and EastEnders.
The cast will also feature Nicky Swift as Rosie, Richard Standing as Sam, Daniel Crowder as Harry, Tamlyn Henderson as Bill, Ellie Kingdon as Sophie, George Maddison as Sky, Chloe Gentles as Ali, Foxy Valentine as Lisa, Joshua de La-Garde as Eddie and Benjamin Dawson as Pepper.
They will be joining Kate Graham, who remains with the company as Tanya, and Emma Odell, who moves from Ensemble to playing Donna at certain performances.
Also continuing in the cast are Franky Attard, Matthew Barrow, Jack Bromage, Maddy Cameron, Dennis Cousins, Andrew Gallo, Lawrence Guntert, Genevieve Jameson, Tom Parsons and Maisie Waller. They will be joined by Ella Beaumont, Joseph Craig, Josh Crowther, George Hinson, Laura Jayne-Hardie, Deena Kapadia, Matthew Mori, Meghan Peploe-Williams, Emily Squibb and Ria Turner.
Earlier this year Mamma Mia! celebrated its 26th birthday in London, and is now the third longest running West End musical of all time, and the fifth longest running production in West End history.
Mamma Mia! first premiered at London’s Prince Edward Theatre in 1999, and has gone on to be seen by 70 million people worldwide, across over 50 productions in 16 different languages, grossing more than £4.5 billion at the box office.
The show was also turned into two hugely successful movies, with producer Judy Craymer confirming in May that a third movie is on the way.
Current cast production photos
Mamma Mia! has music and lyrics by Benny Andersson & Björn Ulvaeus, and 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.
Mamma Mia! is now playing at the Novello Theatre in London, booking to 26 September 2026.
Mamma Mia! is also setting out on a new UK tour from October 2025, initially playing Southampton, Bristol, Oxford, Edinburgh, Swansea, Aberdeen, Newcastle, Manchester, and Leicester.
Book tickets to Mamma Mia! at the Novello Theatre London
More about the cast of Mamma Mia!
Sara Poyzer (Donna)
Sara Poyzer previously played Donna Sheridan in MAMMA MIA! for over 12 years, across the UK, internationally and in the West End; she last played Donna at the Novello Theatre from 2017 to 2019. Other theatre includes the UK Tour of Come From Away as Captain Beverley Bass, Assassins (Watermill Theatre), Rutherford & Son (The Other Palace), Othello (Trafalgar Studios) and Billy Elliot the Musical (Victoria Palace). Earlier this year, Sara played Fiona Morley in Coronation Street and other TV credits include Casualty, EastEnders, Doctors, Heartbeat, Dangerfield, Playing the Field and Peak Practice. On radio, she played Leonie Snell in BBC Radio 4’s The Archers.
Nicky Swift (Rosie)
Nicky Swift previously played Rosie in the UK & International Tours of MAMMA MIA!. Other recent theatre credits include the title role in the UK Tour of Shirley Valentine, the UK Tour of Footloose and Les Misérables in the West End.
Kate Graham (Tanya)
Kat Graham’s previous stage roles include Diane in Come From Away (Phoenix Theatre); Cherry Sundae in Charlie and the Chocolate Factory (Theatre Royal, Drury Lane); Mrs Wilkinson in Billy Elliot (Victoria Palace); Babette in Disney’s Beauty and the Beast (Dominion Theatre & National Tour); Hold Me Touch Me in The Producers (Theatre Royal, Drury Lane); plus roles in Sweeney Todd (Derby Playhouse), Cinderella (Bristol Old Vic), High Spirits (Bridewell), Jerry Springer The Opera (BAC); and No Way to Treat a Lady (Arts Theatre).
Richard Standing (Sam)
Richard Standing, the real-life husband of Sara Poyzer, has starred as Sam opposite Sara in the UK & International Tours of MAMMA MIA!. Richard’s TV credits include Danny Hargreaves in Coronation Street, The Grand, The Bill, Casualty, Doctors, Silent Witness and Holby City. Other recent theatre credits include the title role in Macbeth and Snug in A Midsummer Night’s Dream at Shakespeare’s Rose Theatre.
Daniel Crowder (Harry)
Daniel Crowder’s recent TV credits include Garth in The Cockfields, Coronation Street and Casualty. His recent theatre credits include the UK Tour of Come From Away, Gypsy at the Mill at Sonning and The Graduate at West Yorkshire Playhouse. He has previously played Harry in the UK & International Tours of MAMMA MIA!.
Tamlyn Henderson (Bill)
Tamlyn Henderson’s screen roles include the film The Salt Path and the television series The Tatooist of Auschwitz. Originally from Australia, he’s appeared in the Australian productions of Les Misérables and The Sound of Music and the International Tour of Les Misérables, as well as Sam in the UK & International Tour of MAMMA MIA!. He also starred as Earl in the West End and UK & Ireland Tour of Waitress.
Ellie Kingdon (Sophie)
Ellie Kingdon previously played Sophie in the UK & International Tour of MAMMA MIA!. She also starred as Marty in Grease at London’s Dominion Theatre, as well as Sandy in the UK Tour of Grease.
George Maddison (Sky)
George Maddison previously played Sky in the UK & International Tour of MAMMA MIA!. Other theatre includes Carousel at Kilworth House Theatre and Heathers the Musical at London’s The Other Palace.
Novello Theatre, London
Related News
Mark Goldthorp to join the cast of Mamma Mia! from 24 August
Full cast announced for Love Never Dies concerts at the London Palladium
Mazz Murray, George Blagden, Courtney Stapleton join Love Never Dies London concert
MAMMA MIA! extends West End run to 2027 as London takes centre stage as a global ABBA hub
Latest News
Broadway legend Patti LuPone returns to the London Coliseum for Valentine’s Day 2027
Helen of Troy never got to tell her side. Watch the trailer for the play that does
After a sell-out world tour, The Choir of Man returns to the West End this Christmas
