This workshop gives a flavour of where and how different types of symmetries are employed in the modern context of quantum theories. The workshop will cover the interplay between discrete (CPT) and continuous Lie group symmetries. For instance, conformal symmetries in the form of infinite-dimensional Virasoro in quantum field theories, Kac-Moody algebras in the study of string sigma-models, Lorentzian Kac-Moody algebras (e.. E11) in the description of string and brane theories, and quantum group symmetries in the study of integrable systems. Speakers: Andrea Cavaglia (King's College London) Anastasia Doikou (Heriot-Watt University, Edinburgh) Valentina Forini (City, University of London) Vidas Regelskis (University of Hertfordshire and Vilnius University) Takanobu Taira (City, University of London) Peter West (King's College London) https://cityagm.weebly.com/