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Where new musicals begin

Mercury Musical Developments (MMD) is a membership organisation dedicated to musical theatre writing.

We are a thriving community of over 400 composers, lyricists and book writers from across the UK and the world. We run a year-round programme of initiatives designed to support members through a range of professional development and showcasing initiatives, including masterclasses, residencies, writers’ groups and mentorships.

We connect the wider theatre industry with writers and their musicals, seeking out opportunities, discovering talent and nurturing new work, ensuring that British musical theatre has a bright future.

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What's Going On

News, events and upcoming opportunities

MMD June Open Mic Night

MMD is back with our third Open Mic night of 2026! This is a relaxed, friendly and social event for members to share...

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MMD June Open Mic Night

MMD is back with our third Open Mic night of 2026! This is a relaxed, friendly and social event for members to share their latest work. We encourage MMD members to take the stage themselves to share their piece, but you are equally...

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The title Public the Musical is on a gold sign against a red background

June 6 @ 2:00 pm - 5:00 pm

PUBLIC Theatre Trip + Q+A

PUBLIC Member Event! Join MMD & MTN members and staff on a day...

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Sarah Whitfield speaks at the UK Musical Theatre Conference

June 9 @ 4:00 pm - 5:30 pm

Crowd sourcing the story of British musical theatre 2010-2019

Sarah K. Whitfield and Clare Chandler have been working on an incomplete list...

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Sarah K Whitfield speaks at the UK Musical Theatre Conference

June 15 @ 4:00 pm - 5:30 pm

We are here: building a sustainable future for capturing British musical theatre

Calling musical theatre creatives, organisation, and data professionals who love musicals! After...

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June 17 @ 1:30 pm - 2:15 pm

Musical Bites: Mockingbird 1

Our lunchtime series of new musical readings, Musical Bites, returns this Summer with...

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June 24 @ 7:30 pm - 9:00 pm

June Book Club – Matilda

Every six weeks, MMD members gather online to read and discuss the...

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June 26 @ 2:00 pm - 3:30 pm

Echolocation – Industry Presentation

The first public workshop presentation of the 2025-26 Stiles & Drewe Mentorship...

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July 1 @ 7:30 pm - 9:00 pm

How To Succeed In Business: Developing an Audience

This workshop is the second in a three-part series 'How To Success...

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July 8 @ 1:30 pm - 2:15 pm

Musical Bites: Something In The Water

Our lunchtime series of new musical readings, Musical Bites, returns this Summer with...

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July 15 @ 1:30 pm - 2:15 pm

Musical Bites: It’s Christmas, Carol!

Our lunchtime series of new musical readings, Musical Bites, returns this Summer with...

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July 15 @ 7:30 pm - 10:00 pm

HOT MESS Theatre Trip + Q&A

HOT MESS Member Event! Join MMD/MTN members and staff at The Other Palace...

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July 29 @ 1:30 pm - 2:15 pm

Musical Bites: Theo In Between

Our lunchtime series of new musical readings, Musical Bites, returns this Summer with...

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July 30 @ 7:30 pm - 8:30 pm

How To Succeed In Business: Rights, Royalties & Contracts

This workshop is the third event in a three-part series 'How To Succeed...

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February 11, 2026

I Organised A Musical Theatre Bookwriter Wikithon And All I Got Was 59,000 Article Views – Blog by Helen Arney

On a cold January afternoon, nine musical theatre bookwriters, two Wikimedia trainers...

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Memberships

Join MMD and become part of a community of writers at the forefront of new musical theatre

Masterclasses and talks

Attend regular events led by industry experts and grow your knowledge and skills

Advice and script reading

Get feedback on your writing, mentoring and practical advice

Meet other writers

Create a network and find your collaborators

Career opportunities

Showcase your work and make industry connections

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