Who We Are
We are an amateur theatre company that is there for everyone and anyone who wants to perform or help to put on amazing shows.
Colchester Operatic Society (Charity no. 1198865) was founded in 1924 and we are one of the region’s oldest musical theatre companies performing annually to rave reviews. Over the years we have put on over 130 shows/concerts involving over 8,600 cast and crew.
We currently produce a main show in the early part of the year, running for two weeks at The Mercury Theatre and a summer concert, which has been performed at a variety of smaller venues, in and around Colchester.

What We Do

Backstage Crew
From lighting to costume and props, our backstage team brings every show to life. Learn how you can get involved behind the scenes.

Production Team
The production team brings each show to life. Their expertise ensures every performance runs smoothly and looks spectacular.

The Committee
We are run by elected committee members. Discover who is who and read about their experience in COS.
For many of our members it is being part of an exciting theatrical project that interests them. If you love acting, dancing, singing or assisting in other aspects of theatre productions, there is something for you in COS.
To Us, Inclusion Matters !
We pride ourselves on being community based. Whatever your age, gender, ethnicity, experience or ability, Colchester Operatic Society offers challenging, rewarding and above all FUN activities for anyone with an interest in musical theatre.
LATEST NEWS
Great Scott!! Back to the Past as been cast
Well done to all that auditioned and congratulations to the those[…]
Life is the bubbles under the sea
A massive well done to all the cast, crew and production[…]
Have you got the Golden ticket?
If you are 16-23 and interested in joining CO2 and the[…]
CO2 Youth Group
A huge number of our young performers have gone on to build successful careers in the theatrical industry, making their mark both on and off the stage.
Many of them are currently starring in West End productions, captivating audiences with their talent, and appearing on your TV screens. Their journeys began right here, and we couldn’t be prouder.