Jon Osbaldeston to join the cast of Mamma Mia! The Party

Jon Osbaldeston to join the cast of Mamma Mia! The Party as Nikos, from 28 January 2026.

Jon Osbaldeston’s theatre credits include

  • Les Miserables (West End)
  • Fiddler on the Roof (West End)
  • Kiss of the Spiderwoman (West End)
  • Leonardo (West End)

 

Jon is also one of the co-founders of internationally acclaimed musical theatre group The WestEnders.

He takes over from Fed Zanni and joins existing cast members

  • Marianne Benedict (Matilda) as Kate (at certain performances)
  • Kimberly Powell as Kate (at certain performances)
  • Oscar Balmaseda as Host/Fernando
  • Paola Fareri (The Lion King) as Konstantina
  • Natalie Winsor (A Midsummer Night’s Dream, UK tour) as Debbie
  • AJ Bentley as Adam
  • Dawn Spence as Grandma
  • Rebecca Stenhouse (Grease, UK tour) as Nina
  • Allie Ho Chee (at certain performances)
  • Rosie Rowlands (at certain performances) as Bella
  • Constantine Andronikou (International Magic Tenors) as Robin/Swing
  • Robban Hogstrom as Leo/Swing
  • Nathan Shaw (White Rose) as Carlos/Swing
  • Kelly Aaron as Sue/Swing
  • Claudia Bradley as Loretta/Swing
  • Deschenes Graham as Joyce/Swing.

 

Since opening in August 2019, Mamma Mia! The Party London has welcomed over 600,000 guests, delivered over 1500 performances, and has been visited by guests from 110 countries for a full evening of dancing, dining and singing to some of ABBA’s greatest hits.

Mamma Mia! The Party is London’s premier theatrical dining experience, bringing ABBA’s hits to life more vividly than ever before.

As the sun sets in Skopelos, guests take their seats at Nikos’ family-run taverna where they enjoy a delicious four-course Greek feast, whilst a romantic and heartwarming story unfolds all around them.

Following the performance, which is filled with timeless ABBA anthems such as Mamma Mia, Dancing Queen and Waterloo, guests are encouraged to sing and dance the night away at a glittering ABBA disco.

REVIEW ★★★★★

Additional information

Booking until
4 April 2027

Show Times
Saturday, Sunday at 12pm
Wednesday-Sunday at 6.30pm

Running Time
The experience lasts approximately 4 hours but the party often continues. Don’t forget your dancing shoes!

Theatre
The O2

Age Recommendation
5+

Access Performances
TBC

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