This research aims to contribute toward a critical understanding of how the planning system currently interacts with GMVs in London and the impact of measures introduced to better protect and support GMVs in the city through the planning system. This is achieved through a comparative analysis of planning policy and its application, along with the experience of individuals actively involved in the grassroots sector of the London Boroughs of Hackney and the City of Westminster, two of the most active areas for live music in the capital.