Mercury Musical Developments

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

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 and 15 doughnuts gathered at MMD’s offices with...

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 and 15 doughnuts gathered at MMD’s offices with one aim: to make women and non-binary musical theatre creatives more visible online. Across 4 intensive hours of listening, learning...

March 2 @ 7:00 pm - 9:00 pm

Creating Song Demos Panel

Join us for a special online panel event that delves into different...

March 6 @ 2:30 pm - 4:00 pm

Echolocation – Mentorship Progress Sharing 2

We are pleased to invite MMD and MTN members to the second...

March 16 @ 7:00 pm - 9:00 pm

MMD March Open Mic Night

MMD is back with another Open Mic night! This is a relaxed, friendly and social event...

March 25 @ 7:30 pm - 9:00 pm

March Book Club – Little Shop Of Horrors

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

April 10 @ 6:00 pm - 8:30 pm

The Cottingley Fairies & Informal Meet Up

We're excited to share a special MMD discount code for The Cottingley Fairies,...

UK Musical Theatre Conference 2026 will take place on Wednesday 15th April at Soho Theatre Walthamstow

January 21, 2026

Tickets are now on sale for the 2026 UK Musical Theatre Conference!

The 2026 UK Musical Theatre Conference is taking place on Wednesday 15th...

November 27, 2025

Winner of 2025 Best New Song Prize announced

The winner is Ashton Moore with song ‘Time’ from the musical Work...

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

Learn more

Are you a producer, director or venue?

Musical Theatre Network (MTN) is our partner organisation, bringing people and resources together to improve opportunities for new musical theatre in the UK. MTN’s members are organisations and individuals developing and staging new musicals (working with writers, rather than writers themselves).

Find out more

Mercury Musical Developments

Where new musicals begin

What's Going On

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

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

Creating Song Demos Panel

Echolocation – Mentorship Progress Sharing 2

MMD March Open Mic Night

March Book Club – Little Shop Of Horrors

The Cottingley Fairies & Informal Meet Up

Tickets are now on sale for the 2026 UK Musical Theatre Conference!

Winner of 2025 Best New Song Prize announced