Industry Accelerator memberships for singing, dancing and acting for all ages.
Stagebox offers world-class training and professional development for young performers aged 8–18 in musical theatre, acting, and singing. We specialise in training and managing top talent through exclusive memberships that combine exceptional coaching, career mentorship, and access to industry opportunities. With a proven track record and a global reach, Stagebox empowers the next generation of performers to thrive on stage and screen.
Stagebox train worldwide, enter your postcode below to find your nearest training venue and relevant Memberships.
Memberships available:
Memberships available:
Memberships available:
Memberships available:
Memberships available:
Memberships available:
Memberships available:
*Training location addresses kept private for security purposes.
If you’d like to discuss your child’s journey with us click to book a 1-2-1 consultation and a senior member of the team will contact you.
Meet the team behind the talent
Director of Development & Outreach
Head of Operations
Creative Director
Director of Film
Head of Established Talent
Head of Emerging Talent
Assistant Talent Agent
Production Administrator
In 2015, 20 year old sisters Emily and LJ Keston founded Stagebox in Leeds with a mission to bring access to industry opportunities to young people- regardless of background, location, or experience. The programme began as an outreach initiative in Leeds but soon gathered momentum with centres following in London, Manchester, Birmingham, Edinburgh in tandem with a worldwide online platform.
In 2019, Emily and LJ were approached by West End producers to cast and general manage 300+ children a season having been noticed for their regional scouting & expertise in the sector. They fast became go-to experts as children’s casting directors and general managers at Keston & Keston building an impressive portfolio of credits now including Disney’s The Greatest Showman stage adaptation, The Lion King, Charlie and the Chocolate Factory, Oliver!, 13 Going on 30, Nativity!, NBC Live’s The Grinch, and various high-profile projects for Marvel and Netflix.
In 2025, they continue their work as children’s casting directors and general managers independently and remain proud founders committed to excellence and accessibility in the arts.
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JOEL WHITE
Agent
Joel is an Agent and he handles the Emerging Client list. Joel studied at the Guildford School of Acting before moving into agenting with a decade of experience in the entertainment and talent development sector. Joel nurtures early career development and is responsible for curating career starts and journey progression.
CHLOË POWELL
Associate Agent
Chloë is an Associate Agent and she handles the Established client list. Chloë studied at the London School of Musical Theatre and joined Stagebox in 2019. With a decade of experience in the professional entertainment sector she has been pivotal in managing hundreds of clients from emerging to established before taking on her own list- now curating major careers in lead talent across all genres.
Joe Ramson
DIRECTOR OF FILM
Joe is Director of Film at Stagebox. Joe works as a Director and Producer in the professional film sector and his crews work with Stagebox to bring professional film set experiences to our members. Joe directs the company’s video shoots and works on the Stagebox Video Project and Company Project Live each year. Stagebox has 20 million+ viewers and counting and continues to lead the child sector. Joe is currently working on Sunset Boulevard, (Broadway) & Romeo & Juliet (West End) and his work is critically acclaimed in the industry.
Joe has worked professionally as a Director and Cinematographer. Credits include: Video Design and Cinematography for Sunset Boulevard (West End) starring Nicole Scherzinger. A Doll’s House (Broadway), Betrayal (Broadway), Cabaret (West End), McQueen (West End), Shark is Broken (West End), Punch drunk (London), Rambert (London), 42nd Street (UK Tour), Sound of Music (Chichester), Assassins (Chichester), Pretty Women (West End & UK Tour), Parade (Broadway), & Juliet (West End and Australia), Funny Girl (Broadway), New York, New York (Broadway), Mamma Mia (Australia), A Beautiful Noise (Broadway). Commercial credits include: Disney, Discovery, ITV, BBC, Puma, Amazon, Tesla, Manchester City, Wagamama, Pokemon, Sony, Play station, Nintendo, Lego, England FA, Google, Nickelodeon, Tiffany and Co, Wimbledon, Bentley, Ferrari, Manchester United and Cadbury’s
Jasmine is a Director of Stagebox and she continues in her role as General Manager at Stagebox. Jasmine leads the team in delivering our award winning Stagebox memberships.
Jasmine has a decade of experience in facilitating world class training to children age 5 to Graduate level and working closely with creative teams, parents and children to deliver industry excellence. Jasmine manages our live performance opportunities having overseen hundreds of concerts, events & live performances including: Schwartz at 75 (West End), West End Does series at Cadogan Hall, WhatsonStage Awards & The Company Project Live. Jasmine also founded The Diversity Project initative at Stagebox and has been responsible for inspiring diversity and inclusion across the Company.
Jasmine leads across our training centres of excellence, alongside creatives and with children worldwide to help them achieve their dreams.
Kirsti is a Director of Stagebox and she continues in her role as Head Agent of Stagebox Management. Kirsti studied at Stanford University in America and she has a decade of experience in casting and production. She continues to lead our US style representation and genuine career development for Stagebox clients.
Kirsti leads the department in securing major leading roles in West End, Television and Film productions worldwide. Kirsti has negotiated co-representation deals with the US including The Gersh Agency and Paradigm. Stagebox Management clients have had major success securing roles in BAFTA award winning, Emmy nominated, Stage Debut nominated and Olivier award winning productions.
Stagebox Management are well regarded as the leading children’s management in the UK for lead role success with recent success including roles in the Wicked Movie, Barbie Movie, Disney’s Snow White, 3 Body Problem for Netflix, Matilda Movie, Avenue 5, The Power, The Crown, Secret Invasion, Peaky Blinders, Sex Education, Ted Lasso and every major West End musical and UK Tour. The Management works in tandem with training to ensure reputation and standards of industry excellence for career longevity and growth.
