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ATG Entertainment

Leading global theatre production and operation company

Last updated August 31, 2026

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Overview

ATG Entertainment, formerly Ambassador Theatre Group, is a London-based theatre production and operation company that owns and operates venues in London's West End and New York's Broadway. Founded by Rosemary Squire in 1992, it has grown into one of the largest live entertainment companies globally.

Products and positioning

High-end live entertainment experiences

Product categories. Theatre operations · Theatrical production · Live entertainment

Sources3 sources

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